diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/config/WebSocketConfig.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/config/WebSocketConfig.kt
index 28c82dc..cc3dd61 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/config/WebSocketConfig.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/config/WebSocketConfig.kt
@@ -1,6 +1,7 @@
 package com.wrbug.polymarketbot.config
 
 import com.wrbug.polymarketbot.websocket.PolymarketWebSocketHandler
+import com.wrbug.polymarketbot.websocket.UnifiedWebSocketHandler
 import org.springframework.context.annotation.Configuration
 import org.springframework.web.socket.config.annotation.EnableWebSocket
 import org.springframework.web.socket.config.annotation.WebSocketConfigurer
@@ -13,12 +14,19 @@ import org.springframework.web.socket.config.annotation.WebSocketHandlerRegistry
 @Configuration
 @EnableWebSocket
 class WebSocketConfig(
-    private val polymarketWebSocketHandler: PolymarketWebSocketHandler
+    private val polymarketWebSocketHandler: PolymarketWebSocketHandler,
+    private val unifiedWebSocketHandler: UnifiedWebSocketHandler
 ) : WebSocketConfigurer {
     
     override fun registerWebSocketHandlers(registry: WebSocketHandlerRegistry) {
+        // Polymarket RTDS 转发端点（转发外部 Polymarket 实时数据流）
         registry.addHandler(polymarketWebSocketHandler, "/ws/polymarket")
             .setAllowedOrigins("*")  // 生产环境应该配置具体的域名
+        
+        // 统一 WebSocket 端点（所有推送服务统一使用此路径，通过 channel 区分）
+        // 支持的频道：position（仓位推送）、order（订单推送，待实现）等
+        registry.addHandler(unifiedWebSocketHandler, "/ws")
+            .setAllowedOrigins("*")  // 生产环境应该配置具体的域名
     }
 }
 
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/dto/PositionPushDto.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/dto/PositionPushDto.kt
new file mode 100644
index 0000000..0ceedf9
--- /dev/null
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/dto/PositionPushDto.kt
@@ -0,0 +1,29 @@
+package com.wrbug.polymarketbot.dto
+
+/**
+ * 仓位推送消息类型
+ */
+enum class PositionPushMessageType {
+    FULL,      // 全量推送
+    INCREMENTAL // 增量推送
+}
+
+/**
+ * 仓位推送消息
+ */
+data class PositionPushMessage(
+    val type: PositionPushMessageType,  // 消息类型：FULL（全量）或 INCREMENTAL（增量）
+    val timestamp: Long,                 // 消息时间戳
+    val currentPositions: List<AccountPositionDto> = emptyList(),  // 当前仓位列表（全量或增量）
+    val historyPositions: List<AccountPositionDto> = emptyList(),  // 历史仓位列表（全量或增量）
+    val removedPositionKeys: List<String> = emptyList()  // 已删除的仓位键（仅增量推送时使用）
+)
+
+/**
+ * 仓位键（用于唯一标识一个仓位）
+ * 格式：accountId-marketId-side
+ */
+fun AccountPositionDto.getPositionKey(): String {
+    return "${accountId}-${marketId}-${side}"
+}
+
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/dto/WebSocketMessageDto.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/dto/WebSocketMessageDto.kt
new file mode 100644
index 0000000..23e7ef1
--- /dev/null
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/dto/WebSocketMessageDto.kt
@@ -0,0 +1,35 @@
+package com.wrbug.polymarketbot.dto
+
+/**
+ * WebSocket 消息类型
+ */
+enum class WebSocketMessageType(val value: Int) {
+    SUB(1),        // 订阅
+    UNSUB(2),      // 取消订阅
+    DATA(3),       // 数据推送
+    SUB_ACK(4),    // 订阅确认
+    PING(5),       // 心跳
+    PONG(6);       // 心跳响应
+    
+    companion object {
+        /**
+         * 根据 int 值获取枚举
+         */
+        fun fromValue(value: Int): WebSocketMessageType? {
+            return values().find { it.value == value }
+        }
+    }
+}
+
+/**
+ * WebSocket 消息
+ */
+data class WebSocketMessage(
+    val type: Int,  // WebSocketMessageType 的 int 值（1:SUB, 2:UNSUB, 3:DATA, 4:SUB_ACK, 5:PING, 6:PONG）
+    val channel: String? = null,
+    val payload: Any? = null,  // 可以是 PositionPushMessage 或其他类型
+    val timestamp: Long? = null,
+    val status: Int? = null,  // 0: success, 非0: error
+    val message: String? = null   // 错误信息
+)
+
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/AccountService.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/AccountService.kt
index ea6565b..0bf2ded 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/AccountService.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/AccountService.kt
@@ -24,9 +24,9 @@ class AccountService(
     private val blockchainService: BlockchainService,
     private val apiKeyService: PolymarketApiKeyService
 ) {
-    
+
     private val logger = LoggerFactory.getLogger(AccountService::class.java)
-    
+
     /**
      * 通过私钥导入账户
      */
@@ -37,19 +37,19 @@ class AccountService(
             if (!isValidWalletAddress(request.walletAddress)) {
                 return Result.failure(IllegalArgumentException("无效的钱包地址格式"))
             }
-            
+
             // 2. 检查地址是否已存在
             if (accountRepository.existsByWalletAddress(request.walletAddress)) {
                 return Result.failure(IllegalArgumentException("该钱包地址已存在"))
             }
-            
+
             // 3. 验证私钥和地址的对应关系
             // 注意：前端已经验证了私钥和地址的对应关系，这里只做格式验证
             // 如果需要更严格的验证，可以使用以太坊库（如 web3j）进行验证
             if (!isValidPrivateKey(request.privateKey)) {
                 return Result.failure(IllegalArgumentException("无效的私钥格式"))
             }
-            
+
             // 4. 自动获取或创建 API Key（必须成功，否则导入失败）
             logger.info("开始自动获取或创建 API Key: ${request.walletAddress}")
             val apiKeyCreds = runBlocking {
@@ -58,7 +58,7 @@ class AccountService(
                     walletAddress = request.walletAddress,
                     chainId = 137L  // Polygon 主网
                 )
-                
+
                 if (result.isSuccess) {
                     val creds = result.getOrNull()
                     if (creds != null) {
@@ -74,7 +74,7 @@ class AccountService(
                     throw IllegalStateException("自动获取 API Key 失败: ${error?.message}。请确保私钥有效且账户已激活")
                 }
             }
-            
+
             // 5. 如果设置为默认账户，取消其他账户的默认状态
             if (request.isDefault) {
                 accountRepository.findByIsDefaultTrue()?.let { defaultAccount ->
@@ -82,7 +82,7 @@ class AccountService(
                     accountRepository.save(updated)
                 }
             }
-            
+
             // 6. 获取代理地址（必须成功，否则导入失败）
             val proxyAddress = runBlocking {
                 val proxyResult = blockchainService.getProxyAddress(request.walletAddress)
@@ -101,7 +101,7 @@ class AccountService(
                     throw IllegalStateException("获取代理地址失败: ${error?.message}。请确保已配置 Ethereum RPC URL 且 RPC 节点可用")
                 }
             }
-            
+
             // 7. 创建账户
             val account = Account(
                 privateKey = request.privateKey,
@@ -115,17 +115,17 @@ class AccountService(
                 createdAt = System.currentTimeMillis(),
                 updatedAt = System.currentTimeMillis()
             )
-            
+
             val saved = accountRepository.save(account)
             logger.info("成功导入账户: ${saved.id}, ${saved.walletAddress}, 代理地址: ${saved.proxyAddress}")
-            
+
             Result.success(toDto(saved))
         } catch (e: Exception) {
             logger.error("导入账户失败", e)
             Result.failure(e)
         }
     }
-    
+
     /**
      * 更新账户信息
      */
@@ -134,10 +134,10 @@ class AccountService(
         return try {
             val account = accountRepository.findById(request.accountId)
                 .orElse(null) ?: return Result.failure(IllegalArgumentException("账户不存在"))
-            
+
             // 更新账户名称
             val updatedAccountName = request.accountName ?: account.accountName
-            
+
             // 如果设置为默认账户，取消其他账户的默认状态
             val updatedIsDefault = request.isDefault ?: account.isDefault
             if (updatedIsDefault && !account.isDefault) {
@@ -146,23 +146,23 @@ class AccountService(
                     accountRepository.save(updated)
                 }
             }
-            
+
             val updated = account.copy(
                 accountName = updatedAccountName,
                 isDefault = updatedIsDefault,
                 updatedAt = System.currentTimeMillis()
             )
-            
+
             val saved = accountRepository.save(updated)
             logger.info("成功更新账户: ${saved.id}")
-            
+
             Result.success(toDto(saved))
         } catch (e: Exception) {
             logger.error("更新账户失败", e)
             Result.failure(e)
         }
     }
-    
+
     /**
      * 删除账户
      */
@@ -171,15 +171,15 @@ class AccountService(
         return try {
             val account = accountRepository.findById(accountId)
                 .orElse(null) ?: return Result.failure(IllegalArgumentException("账户不存在"))
-            
+
             // 注意：不再检查活跃订单，允许用户删除有活跃订单的账户
             // 前端会显示确认提示框，由用户决定是否删除
-            
+
             // 如果删除的是默认账户，需要先设置其他账户为默认
             if (account.isDefault) {
                 val otherAccounts = accountRepository.findAllByOrderByCreatedAtAsc()
                     .filter { it.id != accountId }
-                
+
                 if (otherAccounts.isNotEmpty()) {
                     val newDefault = otherAccounts.first().copy(
                         isDefault = true,
@@ -190,17 +190,17 @@ class AccountService(
                     return Result.failure(IllegalStateException("不能删除最后一个账户"))
                 }
             }
-            
+
             accountRepository.delete(account)
             logger.info("成功删除账户: $accountId")
-            
+
             Result.success(Unit)
         } catch (e: Exception) {
             logger.error("删除账户失败", e)
             Result.failure(e)
         }
     }
-    
+
     /**
      * 查询账户列表
      */
@@ -208,17 +208,19 @@ class AccountService(
         return try {
             val accounts = accountRepository.findAllByOrderByCreatedAtAsc()
             val accountDtos = accounts.map { toDto(it) }
-            
-            Result.success(AccountListResponse(
-                list = accountDtos,
-                total = accountDtos.size.toLong()
-            ))
+
+            Result.success(
+                AccountListResponse(
+                    list = accountDtos,
+                    total = accountDtos.size.toLong()
+                )
+            )
         } catch (e: Exception) {
             logger.error("查询账户列表失败", e)
             Result.failure(e)
         }
     }
-    
+
     /**
      * 查询账户详情
      */
@@ -229,16 +231,16 @@ class AccountService(
             } else {
                 accountRepository.findByIsDefaultTrue()
             }
-            
+
             account ?: return Result.failure(IllegalArgumentException("账户不存在"))
-            
+
             Result.success(toDto(account))
         } catch (e: Exception) {
             logger.error("查询账户详情失败", e)
             Result.failure(e)
         }
     }
-    
+
     /**
      * 查询账户余额
      * 通过链上 RPC 查询 USDC 余额，并通过 Subgraph API 查询持仓信息
@@ -250,15 +252,15 @@ class AccountService(
             } else {
                 accountRepository.findByIsDefaultTrue()
             }
-            
+
             account ?: return Result.failure(IllegalArgumentException("账户不存在"))
-            
+
             // 检查代理地址是否存在
             if (account.proxyAddress.isBlank()) {
                 logger.error("账户 ${account.id} 的代理地址为空，无法查询余额")
                 return Result.failure(IllegalStateException("账户代理地址不存在，无法查询余额。请重新导入账户以获取代理地址"))
             }
-            
+
             // 查询 USDC 余额和持仓信息
             val balanceResult = runBlocking {
                 try {
@@ -280,7 +282,7 @@ class AccountService(
                         logger.warn("持仓信息查询失败: ${positionsResult.exceptionOrNull()?.message}")
                         emptyList()
                     }
-                    
+
                     // 使用 /value 接口获取仓位总价值（而不是累加）
                     val positionBalanceResult = blockchainService.getTotalValue(account.proxyAddress)
                     val positionBalance = if (positionBalanceResult.isSuccess) {
@@ -289,7 +291,7 @@ class AccountService(
                         logger.warn("仓位总价值查询失败: ${positionBalanceResult.exceptionOrNull()?.message}")
                         "0"
                     }
-                    
+
                     // 查询可用余额（通过 RPC 查询 USDC 余额）
                     // 必须使用代理地址查询
                     val availableBalanceResult = blockchainService.getUsdcBalance(
@@ -304,10 +306,10 @@ class AccountService(
                         logger.error("USDC 可用余额 RPC 查询失败: ${error?.message}")
                         throw Exception("USDC 可用余额查询失败: ${error?.message}。请确保已配置 Ethereum RPC URL")
                     }
-                    
+
                     // 计算总余额 = 可用余额 + 仓位余额
                     val totalBalance = availableBalance.toSafeBigDecimal().add(positionBalance.toSafeBigDecimal())
-                    
+
                     AccountBalanceResponse(
                         availableBalance = availableBalance,
                         positionBalance = positionBalance,
@@ -319,14 +321,14 @@ class AccountService(
                     throw e
                 }
             }
-            
+
             Result.success(balanceResult)
         } catch (e: Exception) {
             logger.error("查询账户余额失败", e)
             Result.failure(e)
         }
     }
-    
+
     /**
      * 设置默认账户
      */
@@ -335,7 +337,7 @@ class AccountService(
         return try {
             val account = accountRepository.findById(accountId)
                 .orElse(null) ?: return Result.failure(IllegalArgumentException("账户不存在"))
-            
+
             // 取消其他账户的默认状态
             accountRepository.findByIsDefaultTrue()?.let { defaultAccount ->
                 if (defaultAccount.id != account.id) {
@@ -343,11 +345,11 @@ class AccountService(
                     accountRepository.save(updated)
                 }
             }
-            
+
             // 设置当前账户为默认
             val updated = account.copy(isDefault = true, updatedAt = System.currentTimeMillis())
             accountRepository.save(updated)
-            
+
             logger.info("成功设置默认账户: $accountId")
             Result.success(Unit)
         } catch (e: Exception) {
@@ -355,7 +357,7 @@ class AccountService(
             Result.failure(e)
         }
     }
-    
+
     /**
      * 转换为 DTO
      * 包含交易统计数据（总订单数、总盈亏、活跃订单数、已完成订单数、持仓数量）
@@ -379,7 +381,7 @@ class AccountService(
             )
         }
     }
-    
+
     /**
      * 获取账户交易统计数据
      */
@@ -388,27 +390,27 @@ class AccountService(
             // 如果账户没有配置 API 凭证，无法查询统计数据
             if (account.apiKey == null || account.apiSecret == null || account.apiPassphrase == null) {
                 return AccountStatistics(
-                    totalOrders = null, 
+                    totalOrders = null,
                     totalPnl = null,
                     activeOrders = null,
                     completedOrders = null,
                     positionCount = null
                 )
             }
-            
+
             // 使用 API 凭证（直接使用，无需解密）
             val apiKey = account.apiKey
             val apiSecret = account.apiSecret
             val apiPassphrase = account.apiPassphrase
-            
+
             // 创建带认证的 API 客户端（需要钱包地址用于 POLY_ADDRESS 请求头）
             val clobApi = retrofitFactory.createClobApi(apiKey, apiSecret, apiPassphrase, account.walletAddress)
-            
+
             // 1. 查询活跃订单数量（open/active 状态）
             val activeOrdersResult = try {
                 var totalActiveOrders = 0L
                 var nextCursor: String? = null
-                
+
                 // 分页查询所有活跃订单
                 do {
                     val response = clobApi.getActiveOrders(
@@ -425,13 +427,13 @@ class AccountService(
                         break
                     }
                 } while (nextCursor != null && nextCursor.isNotEmpty())
-                
+
                 Result.success(totalActiveOrders)
             } catch (e: Exception) {
                 logger.warn("查询活跃订单失败: ${e.message}", e)
                 Result.failure(e)
             }
-            
+
             // 2. 查询已完成订单数
             // 注意：交易记录数不等于已完成订单数，因为一个订单可能产生多笔交易
             // 已完成订单应该是指已完全成交或已关闭的订单
@@ -442,7 +444,7 @@ class AccountService(
                 // 使用代理地址查询交易记录（作为 maker 的交易）
                 var allTrades = mutableListOf<TradeResponse>()
                 var nextCursor: String? = null
-                
+
                 // 分页查询所有交易（作为 maker）
                 do {
                     val response = clobApi.getTrades(
@@ -457,22 +459,22 @@ class AccountService(
                         break
                     }
                 } while (nextCursor != null && nextCursor.isNotEmpty())
-                
+
                 // 注意：Polymarket API 的 getTrades 接口只支持查询 maker_address，
                 // 如果需要查询作为 taker 的交易，可能需要使用其他接口或查询方式
                 // 目前只统计作为 maker 的交易记录
-                
+
                 // 由于 TradeResponse 没有 orderId 字段，我们无法直接去重订单
                 // 这里使用交易记录数作为已完成订单数的近似值
                 // 更准确的方式需要查询所有订单并统计状态为 "filled" 的订单
                 val completedOrdersCount = allTrades.size.toLong()
-                
+
                 Result.success(completedOrdersCount)
             } catch (e: Exception) {
                 logger.warn("查询交易记录失败: ${e.message}", e)
                 Result.failure(e)
             }
-            
+
             // 3. 查询仓位信息计算总盈亏（已实现盈亏）和持仓数量
             val positionsResult = try {
                 val positions = blockchainService.getPositions(account.proxyAddress)
@@ -496,13 +498,13 @@ class AccountService(
                 logger.warn("查询仓位信息失败: ${e.message}", e)
                 Result.failure(e)
             }
-            
+
             val activeOrders = activeOrdersResult.getOrNull() ?: 0L
             val completedOrders = completedOrdersResult.getOrNull() ?: 0L
             // 总订单数 = 活跃订单数 + 已完成订单数
             val totalOrders = activeOrders + completedOrders
             val (totalPnl, positionCount) = positionsResult.getOrNull() ?: Pair(null, null)
-            
+
             AccountStatistics(
                 totalOrders = totalOrders,
                 totalPnl = totalPnl,
@@ -513,7 +515,7 @@ class AccountService(
         } catch (e: Exception) {
             logger.warn("获取账户统计数据失败: ${e.message}", e)
             AccountStatistics(
-                totalOrders = null, 
+                totalOrders = null,
                 totalPnl = null,
                 activeOrders = null,
                 completedOrders = null,
@@ -521,7 +523,7 @@ class AccountService(
             )
         }
     }
-    
+
     /**
      * 账户统计数据
      */
@@ -532,7 +534,7 @@ class AccountService(
         val completedOrders: Long?,
         val positionCount: Long?
     )
-    
+
     /**
      * 验证钱包地址格式
      */
@@ -540,7 +542,7 @@ class AccountService(
         // 以太坊地址格式：0x 开头，42 位字符
         return address.startsWith("0x") && address.length == 42 && address.matches(Regex("^0x[0-9a-fA-F]{40}$"))
     }
-    
+
     /**
      * 验证私钥格式
      */
@@ -549,7 +551,7 @@ class AccountService(
         val cleanKey = if (privateKey.startsWith("0x")) privateKey.substring(2) else privateKey
         return cleanKey.length == 64 && cleanKey.matches(Regex("^[0-9a-fA-F]{64}$"))
     }
-    
+
     /**
      * 查询所有账户的仓位列表
      * 返回所有账户的仓位信息，包括账户信息
@@ -559,24 +561,24 @@ class AccountService(
             val accounts = accountRepository.findAll()
             val currentPositions = mutableListOf<AccountPositionDto>()
             val historyPositions = mutableListOf<AccountPositionDto>()
-            
+
             // 遍历所有账户，查询每个账户的仓位
             accounts.forEach { account ->
                 if (account.proxyAddress.isNotBlank()) {
                     try {
                         // 查询所有仓位（不限制 sortBy，获取当前和历史仓位）
-                        val positionsResult = blockchainService.getPositions(account.proxyAddress, sortBy = null)
+                        val positionsResult = blockchainService.getPositions(account.proxyAddress)
                         if (positionsResult.isSuccess) {
                             val positions = positionsResult.getOrNull() ?: emptyList()
                             // 遍历所有仓位，区分当前仓位和历史仓位
                             positions.forEach { pos ->
                                 val currentValue = pos.currentValue?.toSafeBigDecimal() ?: BigDecimal.ZERO
                                 val curPrice = pos.curPrice?.toSafeBigDecimal() ?: BigDecimal.ZERO
-                                
+
                                 // 判断是否为当前仓位：currentValue != 0 且 curPrice != 0
                                 // 使用 eq 方法判断值是否等于 0
                                 val isCurrent = !currentValue.eq(BigDecimal.ZERO) && !curPrice.eq(BigDecimal.ZERO)
-                                
+
                                 val positionDto = AccountPositionDto(
                                     accountId = account.id!!,
                                     accountName = account.accountName,
@@ -601,7 +603,7 @@ class AccountService(
                                     endDate = pos.endDate,
                                     isCurrent = isCurrent  // 标识是当前仓位还是历史仓位
                                 )
-                                
+
                                 // 根据 isCurrent 分别添加到对应的列表
                                 if (isCurrent) {
                                     currentPositions.add(positionDto)
@@ -615,19 +617,21 @@ class AccountService(
                     }
                 }
             }
-            
+
             // 按照接口返回的顺序返回，不进行排序
             // 前端负责本地排序
-            Result.success(PositionListResponse(
-                currentPositions = currentPositions,
-                historyPositions = historyPositions
-            ))
+            Result.success(
+                PositionListResponse(
+                    currentPositions = currentPositions,
+                    historyPositions = historyPositions
+                )
+            )
         } catch (e: Exception) {
             logger.error("查询所有仓位失败: ${e.message}", e)
             Result.failure(e)
         }
     }
-    
+
     /**
      * 检查账户是否有活跃订单
      * 使用账户的 API Key 查询该账户的活跃订单
@@ -639,15 +643,15 @@ class AccountService(
                 logger.debug("账户 ${account.id} 未配置 API 凭证，无法查询活跃订单，允许删除")
                 return false
             }
-            
+
             // 使用 API 凭证（直接使用，无需解密）
             val apiKey = account.apiKey
             val apiSecret = account.apiSecret
             val apiPassphrase = account.apiPassphrase
-            
+
             // 创建带认证的 API 客户端（需要钱包地址用于 POLY_ADDRESS 请求头）
             val clobApi = retrofitFactory.createClobApi(apiKey, apiSecret, apiPassphrase, account.walletAddress)
-            
+
             // 查询活跃订单（只查询第一条，用于判断是否有订单）
             // 使用 next_cursor 参数进行分页，这里只查询第一页
             val response = clobApi.getActiveOrders(
@@ -656,7 +660,7 @@ class AccountService(
                 asset_id = null,
                 next_cursor = null  // null 表示从第一页开始
             )
-            
+
             if (response.isSuccessful && response.body() != null) {
                 val ordersResponse = response.body()!!
                 val hasOrders = ordersResponse.data.isNotEmpty()
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/PositionPushService.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/PositionPushService.kt
new file mode 100644
index 0000000..57cca5e
--- /dev/null
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/PositionPushService.kt
@@ -0,0 +1,337 @@
+package com.wrbug.polymarketbot.service
+
+import com.wrbug.polymarketbot.dto.AccountPositionDto
+import com.wrbug.polymarketbot.dto.PositionPushMessage
+import com.wrbug.polymarketbot.dto.PositionPushMessageType
+import com.wrbug.polymarketbot.dto.getPositionKey
+import jakarta.annotation.PostConstruct
+import jakarta.annotation.PreDestroy
+import kotlinx.coroutines.*
+import org.slf4j.LoggerFactory
+import org.springframework.beans.factory.annotation.Value
+import org.springframework.stereotype.Service
+import java.util.concurrent.ConcurrentHashMap
+
+/**
+ * 仓位推送服务
+ * 轮询仓位接口，比较差异并推送增量更新
+ */
+@Service
+class PositionPushService(
+    private val accountService: AccountService
+) {
+    
+    private val logger = LoggerFactory.getLogger(PositionPushService::class.java)
+    
+    @Value("\${position.push.polling-interval:3000}")
+    private var pollingInterval: Long = 3000  // 轮询间隔（毫秒），默认3秒
+    
+    // 存储客户端会话和对应的推送回调
+    private val clientCallbacks = ConcurrentHashMap<String, (PositionPushMessage) -> Unit>()
+    
+    // 存储上一次的仓位数据快照（用于比较差异）
+    private var lastCurrentPositions: Map<String, AccountPositionDto> = emptyMap()
+    private var lastHistoryPositions: Map<String, AccountPositionDto> = emptyMap()
+    
+    // 协程作用域和任务
+    private val scope = CoroutineScope(Dispatchers.Default + SupervisorJob())
+    private var pollingJob: Job? = null
+    
+    // 同步锁，确保轮询任务的启动和停止是线程安全的
+    private val lock = Any()
+    
+    /**
+     * 初始化服务（不自动启动轮询，等待有客户端连接时再启动）
+     */
+    @PostConstruct
+    fun init() {
+        logger.info("仓位推送服务已初始化，轮询间隔: ${pollingInterval}ms，等待客户端连接...")
+    }
+    
+    /**
+     * 清理资源
+     */
+    @PreDestroy
+    fun destroy() {
+        logger.info("停止仓位推送服务")
+        synchronized(lock) {
+            pollingJob?.cancel()
+            pollingJob = null
+        }
+        scope.cancel()
+    }
+    
+    /**
+     * 订阅仓位推送（新接口）
+     */
+    fun subscribe(sessionId: String, callback: (PositionPushMessage) -> Unit) {
+        logger.info("订阅仓位推送: $sessionId")
+        registerSession(sessionId, callback)
+    }
+    
+    /**
+     * 取消订阅仓位推送（新接口）
+     */
+    fun unsubscribe(sessionId: String) {
+        logger.info("取消订阅仓位推送: $sessionId")
+        unregisterSession(sessionId)
+    }
+    
+    /**
+     * 注册客户端会话（兼容旧接口）
+     * 如果有第一个客户端连接，启动轮询任务
+     */
+    fun registerSession(sessionId: String, callback: (PositionPushMessage) -> Unit) {
+        logger.info("注册仓位推送客户端会话: $sessionId")
+        
+        synchronized(lock) {
+            val wasEmpty = clientCallbacks.isEmpty()
+            clientCallbacks[sessionId] = callback
+            
+            // 如果是第一个客户端连接，启动轮询任务
+            if (wasEmpty && clientCallbacks.isNotEmpty()) {
+                logger.info("检测到第一个客户端连接，启动轮询任务")
+                startPolling()
+            }
+        }
+    }
+    
+    /**
+     * 注销客户端会话（兼容旧接口）
+     * 如果没有客户端连接了，停止轮询任务
+     */
+    fun unregisterSession(sessionId: String) {
+        logger.info("注销仓位推送客户端会话: $sessionId")
+        
+        synchronized(lock) {
+            clientCallbacks.remove(sessionId)
+            
+            // 如果没有客户端连接了，停止轮询任务
+            if (clientCallbacks.isEmpty()) {
+                logger.info("没有客户端连接了，停止轮询任务")
+                stopPolling()
+            }
+        }
+    }
+    
+    /**
+     * 发送全量数据给指定客户端
+     */
+    suspend fun sendFullData(sessionId: String) {
+        try {
+            val result = accountService.getAllPositions()
+            if (result.isSuccess) {
+                val positions = result.getOrNull()
+                if (positions != null) {
+                    val message = PositionPushMessage(
+                        type = PositionPushMessageType.FULL,
+                        timestamp = System.currentTimeMillis(),
+                        currentPositions = positions.currentPositions,
+                        historyPositions = positions.historyPositions
+                    )
+                    
+                    // 更新快照
+                    lastCurrentPositions = positions.currentPositions.associateBy { it.getPositionKey() }
+                    lastHistoryPositions = positions.historyPositions.associateBy { it.getPositionKey() }
+                    
+                    // 发送给指定客户端
+                    clientCallbacks[sessionId]?.invoke(message)
+                    logger.debug("已发送全量仓位数据给客户端: $sessionId")
+                }
+            } else {
+                logger.warn("获取仓位数据失败，无法发送全量数据: ${result.exceptionOrNull()?.message}")
+            }
+        } catch (e: Exception) {
+            logger.error("发送全量仓位数据失败: $sessionId, ${e.message}", e)
+        }
+    }
+    
+    /**
+     * 启动轮询任务
+     */
+    private fun startPolling() {
+        synchronized(lock) {
+            // 如果已经有轮询任务在运行，先取消
+            pollingJob?.cancel()
+            
+            // 启动新的轮询任务
+            pollingJob = scope.launch {
+                logger.info("轮询任务已启动，间隔: ${pollingInterval}ms")
+                while (isActive) {
+                    try {
+                        pollAndPush()
+                    } catch (e: Exception) {
+                        logger.error("轮询仓位数据失败: ${e.message}", e)
+                    }
+                    delay(pollingInterval)
+                }
+            }
+        }
+    }
+    
+    /**
+     * 停止轮询任务
+     */
+    private fun stopPolling() {
+        synchronized(lock) {
+            pollingJob?.cancel()
+            pollingJob = null
+            logger.info("轮询任务已停止")
+        }
+    }
+    
+    /**
+     * 轮询仓位数据并推送增量更新
+     */
+    private suspend fun pollAndPush() {
+        // 双重检查：如果没有客户端连接，跳过轮询（虽然理论上不应该发生，但作为安全措施）
+        if (clientCallbacks.isEmpty()) {
+            logger.debug("没有客户端连接，跳过本次轮询")
+            return
+        }
+        
+        try {
+            val result = accountService.getAllPositions()
+            if (result.isSuccess) {
+                val positions = result.getOrNull()
+                if (positions != null) {
+                    // 比较差异
+                    val incremental = calculateIncremental(
+                        newCurrentPositions = positions.currentPositions,
+                        newHistoryPositions = positions.historyPositions
+                    )
+                    
+                    // 如果有变化，推送增量更新
+                    if (incremental != null) {
+                        val message = PositionPushMessage(
+                            type = PositionPushMessageType.INCREMENTAL,
+                            timestamp = System.currentTimeMillis(),
+                            currentPositions = incremental.currentPositions,
+                            historyPositions = incremental.historyPositions,
+                            removedPositionKeys = incremental.removedKeys
+                        )
+                        
+                        // 推送给所有连接的客户端
+                        clientCallbacks.values.forEach { callback ->
+                            try {
+                                callback(message)
+                            } catch (e: Exception) {
+                                logger.error("推送增量更新失败: ${e.message}", e)
+                            }
+                        }
+                        
+                        logger.debug("已推送仓位增量更新，当前仓位变化: ${incremental.currentPositions.size}, 历史仓位变化: ${incremental.historyPositions.size}, 删除: ${incremental.removedKeys.size}")
+                    }
+                    
+                    // 更新快照
+                    lastCurrentPositions = positions.currentPositions.associateBy { it.getPositionKey() }
+                    lastHistoryPositions = positions.historyPositions.associateBy { it.getPositionKey() }
+                }
+            } else {
+                logger.warn("获取仓位数据失败: ${result.exceptionOrNull()?.message}")
+            }
+        } catch (e: Exception) {
+            logger.error("轮询仓位数据异常: ${e.message}", e)
+        }
+    }
+    
+    /**
+     * 计算增量更新
+     * 返回 null 表示没有变化
+     */
+    private fun calculateIncremental(
+        newCurrentPositions: List<AccountPositionDto>,
+        newHistoryPositions: List<AccountPositionDto>
+    ): IncrementalUpdate? {
+        val newCurrentMap = newCurrentPositions.associateBy { it.getPositionKey() }
+        val newHistoryMap = newHistoryPositions.associateBy { it.getPositionKey() }
+        
+        // 找出新增或更新的当前仓位
+        val updatedCurrentPositions = mutableListOf<AccountPositionDto>()
+        newCurrentMap.forEach { (key, newPos) ->
+            val oldPos = lastCurrentPositions[key]
+            if (oldPos == null || hasChanged(oldPos, newPos)) {
+                updatedCurrentPositions.add(newPos)
+            }
+        }
+        
+        // 找出新增或更新的历史仓位
+        val updatedHistoryPositions = mutableListOf<AccountPositionDto>()
+        newHistoryMap.forEach { (key, newPos) ->
+            val oldPos = lastHistoryPositions[key]
+            if (oldPos == null || hasChanged(oldPos, newPos)) {
+                updatedHistoryPositions.add(newPos)
+            }
+        }
+        
+        // 找出已删除的仓位（从当前仓位变为历史仓位，或完全删除）
+        val removedKeys = mutableListOf<String>()
+        
+        // 检查上次的当前仓位是否还在当前仓位列表中
+        lastCurrentPositions.forEach { (key, _) ->
+            if (!newCurrentMap.containsKey(key)) {
+                // 如果不在当前仓位中，检查是否移到了历史仓位
+                if (!newHistoryMap.containsKey(key)) {
+                    // 完全删除
+                    removedKeys.add(key)
+                } else {
+                    // 从当前仓位移到历史仓位，需要更新历史仓位
+                    newHistoryMap[key]?.let { updatedHistoryPositions.add(it) }
+                }
+            }
+        }
+        
+        // 检查上次的历史仓位是否还在历史仓位列表中
+        lastHistoryPositions.forEach { (key, _) ->
+            if (!newHistoryMap.containsKey(key)) {
+                // 如果不在历史仓位中，检查是否移到了当前仓位
+                if (!newCurrentMap.containsKey(key)) {
+                    // 完全删除
+                    removedKeys.add(key)
+                } else {
+                    // 从历史仓位移到当前仓位，需要更新当前仓位
+                    newCurrentMap[key]?.let { updatedCurrentPositions.add(it) }
+                }
+            }
+        }
+        
+        // 如果没有变化，返回 null
+        if (updatedCurrentPositions.isEmpty() && updatedHistoryPositions.isEmpty() && removedKeys.isEmpty()) {
+            return null
+        }
+        
+        return IncrementalUpdate(
+            currentPositions = updatedCurrentPositions,
+            historyPositions = updatedHistoryPositions,
+            removedKeys = removedKeys
+        )
+    }
+    
+    /**
+     * 检查仓位是否有变化
+     * 比较关键字段：数量、价格、价值、盈亏等
+     */
+    private fun hasChanged(old: AccountPositionDto, new: AccountPositionDto): Boolean {
+        return old.quantity != new.quantity ||
+                old.avgPrice != new.avgPrice ||
+                old.currentPrice != new.currentPrice ||
+                old.currentValue != new.currentValue ||
+                old.pnl != new.pnl ||
+                old.percentPnl != new.percentPnl ||
+                old.realizedPnl != new.realizedPnl ||
+                old.percentRealizedPnl != new.percentRealizedPnl ||
+                old.redeemable != new.redeemable ||
+                old.mergeable != new.mergeable ||
+                old.isCurrent != new.isCurrent
+    }
+    
+    /**
+     * 增量更新数据
+     */
+    private data class IncrementalUpdate(
+        val currentPositions: List<AccountPositionDto>,
+        val historyPositions: List<AccountPositionDto>,
+        val removedKeys: List<String>
+    )
+}
+
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/WebSocketSubscriptionService.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/WebSocketSubscriptionService.kt
new file mode 100644
index 0000000..76d63c1
--- /dev/null
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/WebSocketSubscriptionService.kt
@@ -0,0 +1,152 @@
+package com.wrbug.polymarketbot.service
+
+import com.wrbug.polymarketbot.dto.PositionPushMessage
+import com.wrbug.polymarketbot.dto.WebSocketMessage as WsMessage
+import com.wrbug.polymarketbot.dto.WebSocketMessageType
+import kotlinx.coroutines.*
+import org.slf4j.LoggerFactory
+import org.springframework.stereotype.Service
+import java.util.concurrent.ConcurrentHashMap
+
+/**
+ * WebSocket 订阅管理服务
+ * 管理所有频道的订阅和数据推送
+ */
+@Service
+class WebSocketSubscriptionService(
+    private val positionPushService: PositionPushService
+) {
+    
+    private val logger = LoggerFactory.getLogger(WebSocketSubscriptionService::class.java)
+    
+    // 协程作用域，用于异步发送首推数据
+    private val scope = CoroutineScope(Dispatchers.Default + SupervisorJob())
+    
+    // 存储会话和对应的推送回调
+    private val sessionCallbacks = ConcurrentHashMap<String, (WsMessage) -> Unit>()
+    
+    // 存储每个会话的订阅频道：sessionId -> Set<channel>
+    private val sessionSubscriptions = ConcurrentHashMap<String, MutableSet<String>>()
+    
+    // 存储每个频道的订阅会话数：channel -> Set<sessionId>
+    private val channelSubscriptions = ConcurrentHashMap<String, MutableSet<String>>()
+    
+    /**
+     * 注册会话
+     */
+    fun registerSession(sessionId: String, callback: (WsMessage) -> Unit) {
+        logger.info("注册 WebSocket 会话: $sessionId")
+        sessionCallbacks[sessionId] = callback
+        sessionSubscriptions[sessionId] = mutableSetOf()
+    }
+    
+    /**
+     * 注销会话
+     */
+    fun unregisterSession(sessionId: String) {
+        logger.info("注销 WebSocket 会话: $sessionId")
+        
+        // 取消所有订阅
+        val channels = sessionSubscriptions.remove(sessionId) ?: emptySet()
+        channels.forEach { channel ->
+            unsubscribe(sessionId, channel)
+        }
+        
+        sessionCallbacks.remove(sessionId)
+    }
+    
+    /**
+     * 订阅频道
+     */
+    fun subscribe(sessionId: String, channel: String, payload: Map<*, *>?) {
+        logger.info("订阅频道: $sessionId -> $channel")
+        
+        // 检查是否已经订阅
+        val sessionChannels = sessionSubscriptions.getOrPut(sessionId) { mutableSetOf() }
+        if (sessionChannels.contains(channel)) {
+            logger.debug("会话 $sessionId 已经订阅了频道 $channel，跳过重复订阅")
+            sendSubscribeAck(sessionId, channel, true)
+            return
+        }
+        
+        // 记录订阅关系
+        sessionChannels.add(channel)
+        channelSubscriptions.getOrPut(channel) { mutableSetOf() }.add(sessionId)
+        
+        // 发送订阅确认
+        sendSubscribeAck(sessionId, channel, true)
+        
+        // 根据频道类型启动推送服务
+        when (channel) {
+            "position" -> {
+                positionPushService.subscribe(sessionId) { message ->
+                    pushData(sessionId, channel, message)
+                }
+                // 立即发送首推数据（全量数据）
+                scope.launch {
+                    try {
+                        positionPushService.sendFullData(sessionId)
+                        logger.info("已发送仓位首推数据给会话: $sessionId")
+                    } catch (e: Exception) {
+                        logger.error("发送仓位首推数据失败: $sessionId, ${e.message}", e)
+                    }
+                }
+            }
+            else -> {
+                logger.warn("未知的频道: $channel")
+                sendSubscribeAck(sessionId, channel, false, "未知的频道")
+            }
+        }
+    }
+    
+    /**
+     * 取消订阅
+     */
+    fun unsubscribe(sessionId: String, channel: String) {
+        logger.info("取消订阅频道: $sessionId -> $channel")
+        
+        // 移除订阅关系
+        sessionSubscriptions[sessionId]?.remove(channel)
+        channelSubscriptions[channel]?.remove(sessionId)
+        
+        // 取消推送服务的订阅（推送服务内部会处理是否停止轮询）
+        when (channel) {
+            "position" -> positionPushService.unsubscribe(sessionId)
+        }
+    }
+    
+    /**
+     * 推送数据到指定会话
+     */
+    private fun pushData(sessionId: String, channel: String, payload: Any) {
+        val callback = sessionCallbacks[sessionId]
+        if (callback != null) {
+            val message = WsMessage(
+                type = WebSocketMessageType.DATA.value,
+                channel = channel,
+                payload = payload,
+                timestamp = System.currentTimeMillis()
+            )
+            callback(message)
+        } else {
+            logger.warn("会话 $sessionId 的回调不存在，无法推送数据")
+        }
+    }
+    
+    /**
+     * 发送订阅确认
+     */
+    private fun sendSubscribeAck(sessionId: String, channel: String, success: Boolean, errorMessage: String? = null) {
+        val callback = sessionCallbacks[sessionId]
+        if (callback != null) {
+            val message = WsMessage(
+                type = WebSocketMessageType.SUB_ACK.value,
+                channel = channel,
+                status = if (success) 0 else 1,  // 0: success, 非0: error
+                message = errorMessage
+            )
+            callback(message)
+        }
+    }
+}
+
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/websocket/UnifiedWebSocketHandler.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/websocket/UnifiedWebSocketHandler.kt
new file mode 100644
index 0000000..cc36633
--- /dev/null
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/websocket/UnifiedWebSocketHandler.kt
@@ -0,0 +1,219 @@
+package com.wrbug.polymarketbot.websocket
+
+import com.fasterxml.jackson.databind.ObjectMapper
+import com.wrbug.polymarketbot.dto.WebSocketMessage as WsMessage
+import com.wrbug.polymarketbot.dto.WebSocketMessageType
+import com.wrbug.polymarketbot.service.WebSocketSubscriptionService
+import jakarta.annotation.PostConstruct
+import jakarta.annotation.PreDestroy
+import kotlinx.coroutines.*
+import org.slf4j.LoggerFactory
+import org.springframework.beans.factory.annotation.Value
+import org.springframework.stereotype.Component
+import org.springframework.web.socket.*
+import java.util.concurrent.ConcurrentHashMap
+
+/**
+ * 统一 WebSocket 处理器
+ * 处理所有推送频道的订阅和数据推送
+ */
+@Component
+class UnifiedWebSocketHandler(
+    private val objectMapper: ObjectMapper,
+    private val subscriptionService: WebSocketSubscriptionService
+) : WebSocketHandler {
+    
+    private val logger = LoggerFactory.getLogger(UnifiedWebSocketHandler::class.java)
+    
+    @Value("\${websocket.heartbeat-timeout:60000}")
+    private var heartbeatTimeout: Long = 60000
+    
+    // 存储客户端会话
+    private val clientSessions = ConcurrentHashMap<String, WebSocketSession>()
+    
+    // 存储每个连接的最后活动时间
+    private val lastActivityTime = ConcurrentHashMap<String, Long>()
+    
+    // 协程作用域
+    private val scope = CoroutineScope(Dispatchers.Default + SupervisorJob())
+    private var cleanupJob: Job? = null
+    
+    @PostConstruct
+    fun init() {
+        logger.info("统一 WebSocket 处理器已初始化，心跳超时: ${heartbeatTimeout}ms")
+        startCleanupTask()
+    }
+    
+    @PreDestroy
+    fun destroy() {
+        logger.info("停止统一 WebSocket 处理器")
+        cleanupJob?.cancel()
+        scope.cancel()
+    }
+    
+    override fun afterConnectionEstablished(session: WebSocketSession) {
+        logger.info("WebSocket 客户端连接建立: ${session.id}")
+        clientSessions[session.id] = session
+        lastActivityTime[session.id] = System.currentTimeMillis()
+        
+        // 注册会话到订阅服务
+        subscriptionService.registerSession(session.id) { wsMessage ->
+            sendMessageToClient(session.id, wsMessage)
+        }
+    }
+    
+    override fun handleMessage(session: WebSocketSession, message: WebSocketMessage<*>) {
+        val payload = message.payload.toString()
+        
+        // 处理心跳
+        if (payload == "PING" || payload == "ping") {
+            lastActivityTime[session.id] = System.currentTimeMillis()
+            try {
+                session.sendMessage(TextMessage("PONG"))
+                logger.debug("收到心跳并响应: ${session.id}")
+            } catch (e: Exception) {
+                logger.error("发送心跳响应失败: ${session.id}, ${e.message}", e)
+            }
+            return
+        }
+        
+        // 更新活动时间
+        lastActivityTime[session.id] = System.currentTimeMillis()
+        
+        // 解析消息
+        try {
+            val wsMessage: WsMessage = objectMapper.readValue(payload, WsMessage::class.java)
+            handleWebSocketMessage(session.id, wsMessage)
+        } catch (e: Exception) {
+            logger.error("解析 WebSocket 消息失败: ${session.id}, ${e.message}", e)
+        }
+    }
+    
+    /**
+     * 处理 WebSocket 消息
+     */
+    private fun handleWebSocketMessage(sessionId: String, message: WsMessage) {
+        val messageType = WebSocketMessageType.fromValue(message.type)
+        when (messageType) {
+            WebSocketMessageType.SUB -> {
+                val channel = message.channel
+                if (channel != null) {
+                    val payload = message.payload as? Map<*, *>
+                    subscriptionService.subscribe(sessionId, channel, payload)
+                } else {
+                    logger.warn("订阅消息缺少 channel 字段: $sessionId")
+                }
+            }
+            WebSocketMessageType.UNSUB -> {
+                val channel = message.channel
+                if (channel != null) {
+                    subscriptionService.unsubscribe(sessionId, channel)
+                } else {
+                    logger.warn("取消订阅消息缺少 channel 字段: $sessionId")
+                }
+            }
+            null -> {
+                logger.warn("未知的消息类型: ${message.type}")
+            }
+            else -> {
+                logger.warn("不支持的消息类型: ${messageType}")
+            }
+        }
+    }
+    
+    override fun handleTransportError(session: WebSocketSession, exception: Throwable) {
+        logger.error("WebSocket 传输错误: ${session.id}, ${exception.message}", exception)
+        cleanup(session.id)
+    }
+    
+    override fun afterConnectionClosed(session: WebSocketSession, closeStatus: CloseStatus) {
+        logger.info("WebSocket 客户端连接关闭: ${session.id}, 状态: $closeStatus")
+        cleanup(session.id)
+    }
+    
+    override fun supportsPartialMessages(): Boolean = false
+    
+    /**
+     * 发送消息给客户端
+     */
+    private fun sendMessageToClient(sessionId: String, message: WsMessage) {
+        val session = clientSessions[sessionId]
+        if (session != null && session.isOpen) {
+            try {
+                val json = objectMapper.writeValueAsString(message)
+                session.sendMessage(TextMessage(json))
+                lastActivityTime[sessionId] = System.currentTimeMillis()
+            } catch (e: Exception) {
+                logger.error("发送消息失败: $sessionId, ${e.message}", e)
+                cleanup(sessionId)
+            }
+        } else {
+            logger.warn("客户端会话不存在或已关闭: $sessionId")
+            cleanup(sessionId)
+        }
+    }
+    
+    /**
+     * 清理资源
+     */
+    private fun cleanup(sessionId: String) {
+        try {
+            val session = clientSessions.remove(sessionId)
+            lastActivityTime.remove(sessionId)
+            subscriptionService.unregisterSession(sessionId)
+            
+            if (session != null && session.isOpen) {
+                try {
+                    session.close(CloseStatus.NORMAL)
+                } catch (e: Exception) {
+                    logger.debug("关闭会话失败: $sessionId, ${e.message}")
+                }
+            }
+            
+            logger.info("已清理 WebSocket 资源: $sessionId")
+        } catch (e: Exception) {
+            logger.error("清理 WebSocket 资源时发生错误: $sessionId, ${e.message}", e)
+        }
+    }
+    
+    /**
+     * 启动清理任务
+     */
+    private fun startCleanupTask() {
+        cleanupJob = scope.launch {
+            while (isActive) {
+                try {
+                    cleanupInactiveConnections()
+                } catch (e: Exception) {
+                    logger.error("清理不活跃连接失败: ${e.message}", e)
+                }
+                delay(30000)
+            }
+        }
+    }
+    
+    /**
+     * 清理不活跃的连接
+     */
+    private fun cleanupInactiveConnections() {
+        val now = System.currentTimeMillis()
+        val inactiveSessions = mutableListOf<String>()
+        
+        lastActivityTime.forEach { (sessionId, lastActivity) ->
+            val inactiveTime = now - lastActivity
+            if (inactiveTime > heartbeatTimeout) {
+                inactiveSessions.add(sessionId)
+            }
+        }
+        
+        inactiveSessions.forEach { sessionId ->
+            logger.warn("检测到不活跃连接，准备清理: $sessionId, 不活跃时间: ${now - (lastActivityTime[sessionId] ?: 0)}ms")
+            cleanup(sessionId)
+        }
+        
+        if (inactiveSessions.isNotEmpty()) {
+            logger.info("已清理 ${inactiveSessions.size} 个不活跃连接")
+        }
+    }
+}
+
diff --git a/backend/src/main/resources/application.properties b/backend/src/main/resources/application.properties
index 5f4c263..74a0818 100644
--- a/backend/src/main/resources/application.properties
+++ b/backend/src/main/resources/application.properties
@@ -40,3 +40,12 @@ polymarket.data-api.base-url=https://data-api.polymarket.com
 # 示例：https://polygon-rpc.com 或 https://polygon-mainnet.infura.io/v3/YOUR_PROJECT_ID
 ethereum.rpc.url=${ETHEREUM_RPC_URL:https://polygon-rpc.com}
 
+# 仓位推送配置
+# 轮询间隔（毫秒），默认3秒
+position.push.polling-interval=${POSITION_PUSH_POLLING_INTERVAL:3000}
+# 心跳超时时间（毫秒），默认60秒，超过此时间未收到心跳则清理连接
+position.push.heartbeat-timeout=${POSITION_PUSH_HEARTBEAT_TIMEOUT:60000}
+
+# WebSocket 配置
+websocket.heartbeat-timeout=${WEBSOCKET_HEARTBEAT_TIMEOUT:60000}
+
diff --git a/docs/websocket-push-service-design.md b/docs/websocket-push-service-design.md
new file mode 100644
index 0000000..a6b5a1e
--- /dev/null
+++ b/docs/websocket-push-service-design.md
@@ -0,0 +1,1076 @@
+# WebSocket 推送服务重构设计文档
+
+## 1. 概述
+
+### 1.1 设计目标
+
+- **统一连接**：所有推送服务共用一个 WebSocket 连接（`/ws`）
+- **多频道支持**：支持多个推送频道（position、order 等）
+- **订阅管理**：前端统一管理订阅，避免重复订阅
+- **数据分发**：后端根据频道推送，前端分发到订阅者
+- **可扩展性**：易于添加新的推送频道
+
+### 1.2 架构设计
+
+```
+前端应用
+  ↓
+全局 WebSocket 连接 (/ws)
+  ↓
+订阅管理器 (统一管理订阅)
+  ↓
+频道分发器 (根据 channel 分发数据)
+  ↓
+订阅者 (组件/页面)
+```
+
+## 2. 消息协议
+
+### 2.1 客户端 → 服务端
+
+#### 订阅频道
+```json
+{
+  "type": 1,
+  "channel": "position",
+  "payload": {}  // 可选，根据频道自定义参数
+}
+```
+
+#### 取消订阅
+```json
+{
+  "type": 2,
+  "channel": "position"
+}
+```
+
+#### 心跳保活
+```json
+"PING"
+```
+
+### 2.2 服务端 → 客户端
+
+#### 数据推送
+```json
+{
+  "type": 3,
+  "channel": "position",
+  "payload": {
+    // 频道数据，根据频道类型定义
+  },
+  "timestamp": 1234567890
+}
+```
+
+#### 订阅确认
+```json
+{
+  "type": 4,
+  "channel": "position",
+  "status": 0,  // 0: success, 非0: error
+  "message": ""  // 错误时提供错误信息
+}
+```
+
+#### 心跳响应
+```json
+"PONG"
+```
+
+### 2.3 消息类型定义
+
+**WebSocketMessageType 枚举值**：
+- `1`: SUB - 订阅
+- `2`: UNSUB - 取消订阅
+- `3`: DATA - 数据推送
+- `4`: SUB_ACK - 订阅确认
+- `5`: PING - 心跳
+- `6`: PONG - 心跳响应
+
+**status 字段**：
+- `0`: 成功
+- `非0`: 错误（具体错误码可自定义）
+
+## 3. 频道定义
+
+### 3.1 仓位推送频道 (position)
+
+#### 订阅参数
+```json
+{
+  "type": "sub",
+  "channel": "position",
+  "payload": {}  // 当前无需参数，后续可扩展（如账户筛选等）
+}
+```
+
+#### 推送数据格式
+```json
+{
+  "type": "data",
+  "channel": "position",
+  "payload": {
+    "messageType": "FULL",  // FULL | INCREMENTAL
+    "currentPositions": [],
+    "historyPositions": [],
+    "removedPositionKeys": []
+  },
+  "timestamp": 1234567890
+}
+```
+
+### 3.2 订单推送频道 (order)
+
+#### 订阅参数
+```json
+{
+  "type": "sub",
+  "channel": "order",
+  "payload": {
+    "accountId": 123,  // 可选，筛选特定账户
+    "status": "active"  // 可选，筛选订单状态
+  }
+}
+```
+
+#### 推送数据格式
+```json
+{
+  "type": "data",
+  "channel": "order",
+  "payload": {
+    "messageType": "FULL",  // FULL | INCREMENTAL
+    "orders": [],
+    "removedOrderIds": []
+  },
+  "timestamp": 1234567890
+}
+```
+
+## 4. 前端实现方案
+
+### 4.1 全局 WebSocket 管理器
+
+**文件**: `frontend/src/services/websocket.ts`
+
+```typescript
+/**
+ * WebSocket 消息类型（int 值）
+ */
+export enum WebSocketMessageType {
+  SUB = 1,        // 订阅
+  UNSUB = 2,      // 取消订阅
+  DATA = 3,       // 数据推送
+  SUB_ACK = 4,    // 订阅确认
+  PING = 5,       // 心跳
+  PONG = 6        // 心跳响应
+}
+
+/**
+ * WebSocket 消息
+ */
+export interface WebSocketMessage {
+  type: number  // WebSocketMessageType 的 int 值（1:SUB, 2:UNSUB, 3:DATA, 4:SUB_ACK, 5:PING, 6:PONG）
+  channel?: string
+  payload?: any
+  timestamp?: number
+  status?: number  // 0: success, 非0: error
+  message?: string
+}
+
+/**
+ * 订阅回调函数
+ */
+export type SubscriptionCallback = (data: any) => void
+
+/**
+ * 全局 WebSocket 管理器
+ */
+class WebSocketManager {
+  private ws: WebSocket | null = null
+  private reconnectTimer: NodeJS.Timeout | null = null
+  private pingInterval: NodeJS.Timeout | null = null
+  private isConnecting = false
+  private isUnmounting = false
+  
+  // 订阅管理：channel -> Set<callback>
+  private subscriptions = new Map<string, Set<SubscriptionCallback>>()
+  
+  // 订阅状态：channel -> boolean（是否已向后端订阅）
+  private subscribedChannels = new Set<string>()
+  
+  // 连接状态回调
+  private connectionCallbacks: Set<(connected: boolean) => void> = new Set()
+  
+  private reconnectDelay = 3000
+  private pingIntervalTime = 30000
+  
+  /**
+   * 连接 WebSocket
+   */
+  connect(): void {
+    if (this.ws?.readyState === WebSocket.OPEN || this.isConnecting) {
+      return
+    }
+    
+    if (this.isUnmounting) {
+      return
+    }
+    
+    this.isConnecting = true
+    const wsUrl = this.getWebSocketUrl()
+    console.log('正在连接 WebSocket:', wsUrl)
+    
+    try {
+      const ws = new WebSocket(wsUrl)
+      this.ws = ws
+      
+      ws.onopen = () => {
+        console.log('WebSocket 连接成功')
+        this.isConnecting = false
+        this.notifyConnectionStatus(true)
+        this.startPing()
+        this.resubscribeAll()  // 重新订阅所有频道
+      }
+      
+      ws.onmessage = (event) => {
+        this.handleMessage(event.data)
+      }
+      
+      ws.onerror = (error) => {
+        console.error('WebSocket 错误:', error)
+        this.isConnecting = false
+        this.notifyConnectionStatus(false)
+      }
+      
+      ws.onclose = () => {
+        console.log('WebSocket 连接关闭')
+        this.isConnecting = false
+        this.notifyConnectionStatus(false)
+        this.stopPing()
+        this.scheduleReconnect()
+      }
+    } catch (error) {
+      console.error('创建 WebSocket 连接失败:', error)
+      this.isConnecting = false
+      this.notifyConnectionStatus(false)
+      this.scheduleReconnect()
+    }
+  }
+  
+  /**
+   * 断开连接
+   */
+  disconnect(): void {
+    this.isUnmounting = true
+    this.stopPing()
+    if (this.reconnectTimer) {
+      clearTimeout(this.reconnectTimer)
+      this.reconnectTimer = null
+    }
+    if (this.ws) {
+      this.ws.close()
+      this.ws = null
+    }
+  }
+  
+  /**
+   * 订阅频道
+   */
+  subscribe(channel: string, callback: SubscriptionCallback, payload?: any): () => void {
+    // 添加订阅者
+    if (!this.subscriptions.has(channel)) {
+      this.subscriptions.set(channel, new Set())
+    }
+    this.subscriptions.get(channel)!.add(callback)
+    
+    // 如果还未向后端订阅，发送订阅消息
+    if (!this.subscribedChannels.has(channel)) {
+      this.sendSubscribe(channel, payload)
+    }
+    
+    // 返回取消订阅函数
+    return () => {
+      this.unsubscribe(channel, callback)
+    }
+  }
+  
+  /**
+   * 取消订阅
+   */
+  unsubscribe(channel: string, callback: SubscriptionCallback): void {
+    const callbacks = this.subscriptions.get(channel)
+    if (callbacks) {
+      callbacks.delete(callback)
+      
+      // 如果没有订阅者了，向后端取消订阅
+      if (callbacks.size === 0) {
+        this.subscriptions.delete(channel)
+        this.sendUnsubscribe(channel)
+        this.subscribedChannels.delete(channel)
+      }
+    }
+  }
+  
+  /**
+   * 发送订阅消息
+   */
+  private sendSubscribe(channel: string, payload?: any): void {
+    if (this.ws?.readyState === WebSocket.OPEN) {
+      const message: WebSocketMessage = {
+        type: 'sub',
+        channel,
+        payload
+      }
+      this.ws.send(JSON.stringify(message))
+      this.subscribedChannels.add(channel)
+      console.log('已订阅频道:', channel)
+    }
+  }
+  
+  /**
+   * 发送取消订阅消息
+   */
+  private sendUnsubscribe(channel: string): void {
+    if (this.ws?.readyState === WebSocket.OPEN) {
+      const message: WebSocketMessage = {
+        type: 'unsub',
+        channel
+      }
+      this.ws.send(JSON.stringify(message))
+      console.log('已取消订阅频道:', channel)
+    }
+  }
+  
+  /**
+   * 处理收到的消息
+   */
+  private handleMessage(data: string): void {
+    // 处理心跳
+    if (data === 'PONG') {
+      return
+    }
+    
+    try {
+      const message: WebSocketMessage = JSON.parse(data)
+      
+      if (message.type === WebSocketMessageType.DATA && message.channel) {
+        // 数据推送：分发到订阅者
+        const callbacks = this.subscriptions.get(message.channel)
+        if (callbacks) {
+          callbacks.forEach(callback => {
+            try {
+              callback(message.payload)
+            } catch (error) {
+              console.error(`频道 ${message.channel} 回调执行失败:`, error)
+            }
+          })
+        }
+      } else if (message.type === WebSocketMessageType.SUB_ACK) {
+        // 订阅确认
+        if (message.status !== undefined && message.status !== 0) {
+          console.error(`订阅频道 ${message.channel} 失败:`, message.message)
+          this.subscribedChannels.delete(message.channel || '')
+        }
+      }
+    } catch (error) {
+      console.error('解析 WebSocket 消息失败:', error)
+    }
+  }
+  
+  /**
+   * 重新订阅所有频道
+   */
+  private resubscribeAll(): void {
+    this.subscribedChannels.clear()
+    this.subscriptions.forEach((callbacks, channel) => {
+      if (callbacks.size > 0) {
+        this.sendSubscribe(channel)
+      }
+    })
+  }
+  
+  /**
+   * 安排重连
+   */
+  private scheduleReconnect(): void {
+    if (this.isUnmounting) {
+      return
+    }
+    
+    if (this.reconnectTimer) {
+      clearTimeout(this.reconnectTimer)
+    }
+    
+    this.reconnectTimer = setTimeout(() => {
+      this.connect()
+    }, this.reconnectDelay)
+  }
+  
+  /**
+   * 开始心跳
+   */
+  private startPing(): void {
+    this.stopPing()
+    this.pingInterval = setInterval(() => {
+      if (this.ws?.readyState === WebSocket.OPEN) {
+        this.ws.send('PING')
+      }
+    }, this.pingIntervalTime)
+  }
+  
+  /**
+   * 停止心跳
+   */
+  private stopPing(): void {
+    if (this.pingInterval) {
+      clearInterval(this.pingInterval)
+      this.pingInterval = null
+    }
+  }
+  
+  /**
+   * 获取 WebSocket URL
+   */
+  private getWebSocketUrl(): string {
+    const protocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:'
+    const host = window.location.host
+    return `${protocol}//${host}/ws`
+  }
+  
+  /**
+   * 注册连接状态回调
+   */
+  onConnectionChange(callback: (connected: boolean) => void): () => void {
+    this.connectionCallbacks.add(callback)
+    return () => {
+      this.connectionCallbacks.delete(callback)
+    }
+  }
+  
+  /**
+   * 通知连接状态变化
+   */
+  private notifyConnectionStatus(connected: boolean): void {
+    this.connectionCallbacks.forEach(callback => {
+      try {
+        callback(connected)
+      } catch (error) {
+        console.error('连接状态回调执行失败:', error)
+      }
+    })
+  }
+  
+  /**
+   * 获取连接状态
+   */
+  isConnected(): boolean {
+    return this.ws?.readyState === WebSocket.OPEN
+  }
+}
+
+// 导出单例
+export const wsManager = new WebSocketManager()
+```
+
+### 4.2 React Hook 封装
+
+**文件**: `frontend/src/hooks/useWebSocket.ts`
+
+```typescript
+import { useEffect, useState, useRef } from 'react'
+import { wsManager, SubscriptionCallback } from '../services/websocket'
+
+/**
+ * 使用 WebSocket 订阅
+ */
+export function useWebSocketSubscription<T = any>(
+  channel: string,
+  callback: SubscriptionCallback,
+  payload?: any
+): { connected: boolean } {
+  const [connected, setConnected] = useState(wsManager.isConnected())
+  const callbackRef = useRef(callback)
+  
+  // 更新回调引用
+  useEffect(() => {
+    callbackRef.current = callback
+  }, [callback])
+  
+  useEffect(() => {
+    // 确保连接
+    if (!wsManager.isConnected()) {
+      wsManager.connect()
+    }
+    
+    // 订阅频道
+    const unsubscribe = wsManager.subscribe(channel, (data) => {
+      callbackRef.current(data)
+    }, payload)
+    
+    // 监听连接状态
+    const removeConnectionListener = wsManager.onConnectionChange(setConnected)
+    
+    return () => {
+      unsubscribe()
+      removeConnectionListener()
+    }
+  }, [channel, payload])
+  
+  return { connected }
+}
+```
+
+### 4.3 使用示例
+
+**文件**: `frontend/src/pages/PositionList.tsx`
+
+```typescript
+import { useWebSocketSubscription } from '../hooks/useWebSocket'
+import type { PositionPushMessage } from '../types'
+
+const PositionList: React.FC = () => {
+  // 订阅仓位推送
+  const { connected } = useWebSocketSubscription<PositionPushMessage>(
+    'position',
+    (message) => {
+      if (message.messageType === 'FULL') {
+        setCurrentPositions(message.currentPositions || [])
+        setHistoryPositions(message.historyPositions || [])
+        setLoading(false)
+      } else if (message.messageType === 'INCREMENTAL') {
+        setCurrentPositions(prev => mergePositions(prev, message.currentPositions || [], message.removedPositionKeys || []))
+        setHistoryPositions(prev => mergePositions(prev, message.historyPositions || [], message.removedPositionKeys || []))
+      }
+    }
+  )
+  
+  // ... 其他代码
+}
+```
+
+## 5. 后端实现方案
+
+### 5.1 WebSocket 消息 DTO
+
+**文件**: `backend/src/main/kotlin/com/wrbug/polymarketbot/dto/WebSocketMessageDto.kt`
+
+```kotlin
+package com.wrbug.polymarketbot.dto
+
+/**
+ * WebSocket 消息类型
+ */
+enum class WebSocketMessageType {
+    SUB,        // 订阅
+    UNSUB,      // 取消订阅
+    DATA,       // 数据推送
+    SUB_ACK,    // 订阅确认
+    PING,       // 心跳
+    PONG        // 心跳响应
+}
+
+/**
+ * WebSocket 消息类型
+ */
+enum class WebSocketMessageType(val value: Int) {
+    SUB(1),        // 订阅
+    UNSUB(2),      // 取消订阅
+    DATA(3),       // 数据推送
+    SUB_ACK(4),    // 订阅确认
+    PING(5),       // 心跳
+    PONG(6);       // 心跳响应
+    
+    companion object {
+        fun fromValue(value: Int): WebSocketMessageType? {
+            return values().find { it.value == value }
+        }
+    }
+}
+
+/**
+ * WebSocket 消息
+ */
+data class WebSocketMessage(
+    val type: Int,  // WebSocketMessageType 的 int 值（1:SUB, 2:UNSUB, 3:DATA, 4:SUB_ACK, 5:PING, 6:PONG）
+    val channel: String? = null,
+    val payload: Any? = null,
+    val timestamp: Long? = null,
+    val status: Int? = null,  // 0: success, 非0: error
+    val message: String? = null   // 错误信息
+)
+
+/**
+ * 订阅请求
+ */
+data class SubscribeRequest(
+    val channel: String,
+    val payload: Map<String, Any>? = null
+)
+
+/**
+ * 取消订阅请求
+ */
+data class UnsubscribeRequest(
+    val channel: String
+)
+```
+
+### 5.2 统一 WebSocket 处理器
+
+**文件**: `backend/src/main/kotlin/com/wrbug/polymarketbot/websocket/UnifiedWebSocketHandler.kt`
+
+```kotlin
+package com.wrbug.polymarketbot.websocket
+
+import com.fasterxml.jackson.databind.ObjectMapper
+import com.wrbug.polymarketbot.dto.*
+import com.wrbug.polymarketbot.service.WebSocketSubscriptionService
+import jakarta.annotation.PostConstruct
+import jakarta.annotation.PreDestroy
+import kotlinx.coroutines.*
+import org.slf4j.LoggerFactory
+import org.springframework.beans.factory.annotation.Value
+import org.springframework.stereotype.Component
+import org.springframework.web.socket.*
+import java.util.concurrent.ConcurrentHashMap
+
+/**
+ * 统一 WebSocket 处理器
+ * 处理所有推送频道的订阅和数据推送
+ */
+@Component
+class UnifiedWebSocketHandler(
+    private val objectMapper: ObjectMapper,
+    private val subscriptionService: WebSocketSubscriptionService
+) : WebSocketHandler {
+    
+    private val logger = LoggerFactory.getLogger(UnifiedWebSocketHandler::class.java)
+    
+    @Value("\${websocket.heartbeat-timeout:60000}")
+    private var heartbeatTimeout: Long = 60000
+    
+    // 存储客户端会话
+    private val clientSessions = ConcurrentHashMap<String, WebSocketSession>()
+    
+    // 存储每个连接的最后活动时间
+    private val lastActivityTime = ConcurrentHashMap<String, Long>()
+    
+    // 协程作用域
+    private val scope = CoroutineScope(Dispatchers.Default + SupervisorJob())
+    private var cleanupJob: Job? = null
+    
+    @PostConstruct
+    fun init() {
+        logger.info("统一 WebSocket 处理器已初始化，心跳超时: ${heartbeatTimeout}ms")
+        startCleanupTask()
+    }
+    
+    @PreDestroy
+    fun destroy() {
+        logger.info("停止统一 WebSocket 处理器")
+        cleanupJob?.cancel()
+        scope.cancel()
+    }
+    
+    override fun afterConnectionEstablished(session: WebSocketSession) {
+        logger.info("WebSocket 客户端连接建立: ${session.id}")
+        clientSessions[session.id] = session
+        lastActivityTime[session.id] = System.currentTimeMillis()
+        
+        // 注册会话到订阅服务
+        subscriptionService.registerSession(session.id) { message ->
+            sendMessageToClient(session.id, message)
+        }
+    }
+    
+    override fun handleMessage(session: WebSocketSession, message: WebSocketMessage<*>) {
+        val payload = message.payload.toString()
+        
+        // 处理心跳
+        if (payload == "PING" || payload == "ping") {
+            lastActivityTime[session.id] = System.currentTimeMillis()
+            try {
+                session.sendMessage(TextMessage("PONG"))
+            } catch (e: Exception) {
+                logger.error("发送心跳响应失败: ${session.id}, ${e.message}", e)
+            }
+            return
+        }
+        
+        // 更新活动时间
+        lastActivityTime[session.id] = System.currentTimeMillis()
+        
+        // 解析消息
+        try {
+            val wsMessage = objectMapper.readValue(payload, WebSocketMessage::class.java)
+            handleWebSocketMessage(session.id, wsMessage)
+        } catch (e: Exception) {
+            logger.error("解析 WebSocket 消息失败: ${session.id}, ${e.message}", e)
+        }
+    }
+    
+    /**
+     * 处理 WebSocket 消息
+     */
+    private fun handleWebSocketMessage(sessionId: String, message: WebSocketMessage) {
+        val messageType = WebSocketMessageType.fromValue(message.type)
+        when (messageType) {
+            WebSocketMessageType.SUB -> {
+                val channel = message.channel ?: return
+                val payload = message.payload as? Map<*, *>
+                subscriptionService.subscribe(sessionId, channel, payload)
+            }
+            WebSocketMessageType.UNSUB -> {
+                val channel = message.channel ?: return
+                subscriptionService.unsubscribe(sessionId, channel)
+            }
+            null -> {
+                logger.warn("未知的消息类型: ${message.type}")
+            }
+            else -> {
+                logger.warn("不支持的消息类型: $messageType")
+            }
+        }
+    }
+    
+    override fun handleTransportError(session: WebSocketSession, exception: Throwable) {
+        logger.error("WebSocket 传输错误: ${session.id}, ${exception.message}", exception)
+        cleanup(session.id)
+    }
+    
+    override fun afterConnectionClosed(session: WebSocketSession, closeStatus: CloseStatus) {
+        logger.info("WebSocket 客户端连接关闭: ${session.id}, 状态: $closeStatus")
+        cleanup(session.id)
+    }
+    
+    override fun supportsPartialMessages(): Boolean = false
+    
+    /**
+     * 发送消息给客户端
+     */
+    private fun sendMessageToClient(sessionId: String, message: WebSocketMessage) {
+        val session = clientSessions[sessionId]
+        if (session != null && session.isOpen) {
+            try {
+                val json = objectMapper.writeValueAsString(message)
+                session.sendMessage(TextMessage(json))
+                lastActivityTime[sessionId] = System.currentTimeMillis()
+            } catch (e: Exception) {
+                logger.error("发送消息失败: $sessionId, ${e.message}", e)
+                cleanup(sessionId)
+            }
+        } else {
+            logger.warn("客户端会话不存在或已关闭: $sessionId")
+            cleanup(sessionId)
+        }
+    }
+    
+    /**
+     * 清理资源
+     */
+    private fun cleanup(sessionId: String) {
+        try {
+            clientSessions.remove(sessionId)
+            lastActivityTime.remove(sessionId)
+            subscriptionService.unregisterSession(sessionId)
+            
+            val session = clientSessions[sessionId]
+            if (session != null && session.isOpen) {
+                try {
+                    session.close(CloseStatus.NORMAL)
+                } catch (e: Exception) {
+                    logger.debug("关闭会话失败: $sessionId, ${e.message}")
+                }
+            }
+            
+            logger.info("已清理 WebSocket 资源: $sessionId")
+        } catch (e: Exception) {
+            logger.error("清理 WebSocket 资源时发生错误: $sessionId, ${e.message}", e)
+        }
+    }
+    
+    /**
+     * 启动清理任务
+     */
+    private fun startCleanupTask() {
+        cleanupJob = scope.launch {
+            while (isActive) {
+                try {
+                    cleanupInactiveConnections()
+                } catch (e: Exception) {
+                    logger.error("清理不活跃连接失败: ${e.message}", e)
+                }
+                delay(30000)
+            }
+        }
+    }
+    
+    /**
+     * 清理不活跃的连接
+     */
+    private fun cleanupInactiveConnections() {
+        val now = System.currentTimeMillis()
+        val inactiveSessions = mutableListOf<String>()
+        
+        lastActivityTime.forEach { (sessionId, lastActivity) ->
+            val inactiveTime = now - lastActivity
+            if (inactiveTime > heartbeatTimeout) {
+                inactiveSessions.add(sessionId)
+            }
+        }
+        
+        inactiveSessions.forEach { sessionId ->
+            logger.warn("检测到不活跃连接，准备清理: $sessionId, 不活跃时间: ${now - (lastActivityTime[sessionId] ?: 0)}ms")
+            cleanup(sessionId)
+        }
+        
+        if (inactiveSessions.isNotEmpty()) {
+            logger.info("已清理 ${inactiveSessions.size} 个不活跃连接")
+        }
+    }
+}
+```
+
+### 5.3 订阅管理服务
+
+**文件**: `backend/src/main/kotlin/com/wrbug/polymarketbot/service/WebSocketSubscriptionService.kt`
+
+```kotlin
+package com.wrbug.polymarketbot.service
+
+import com.wrbug.polymarketbot.dto.WebSocketMessage
+import com.wrbug.polymarketbot.dto.WebSocketMessageType
+import org.slf4j.LoggerFactory
+import org.springframework.stereotype.Service
+import java.util.concurrent.ConcurrentHashMap
+
+/**
+ * WebSocket 订阅管理服务
+ * 管理所有频道的订阅和数据推送
+ */
+@Service
+class WebSocketSubscriptionService(
+    private val positionPushService: PositionPushService,
+    private val orderPushService: OrderPushService  // 后续实现
+) {
+    
+    private val logger = LoggerFactory.getLogger(WebSocketSubscriptionService::class.java)
+    
+    // 存储会话和对应的推送回调
+    private val sessionCallbacks = ConcurrentHashMap<String, (WebSocketMessage) -> Unit>()
+    
+    // 存储每个会话的订阅频道：sessionId -> Set<channel>
+    private val sessionSubscriptions = ConcurrentHashMap<String, MutableSet<String>>()
+    
+    // 存储每个频道的订阅会话数：channel -> Set<sessionId>
+    private val channelSubscriptions = ConcurrentHashMap<String, MutableSet<String>>()
+    
+    /**
+     * 注册会话
+     */
+    fun registerSession(sessionId: String, callback: (WebSocketMessage) -> Unit) {
+        logger.info("注册 WebSocket 会话: $sessionId")
+        sessionCallbacks[sessionId] = callback
+        sessionSubscriptions[sessionId] = mutableSetOf()
+    }
+    
+    /**
+     * 注销会话
+     */
+    fun unregisterSession(sessionId: String) {
+        logger.info("注销 WebSocket 会话: $sessionId")
+        
+        // 取消所有订阅
+        val channels = sessionSubscriptions.remove(sessionId) ?: emptySet()
+        channels.forEach { channel ->
+            unsubscribe(sessionId, channel)
+        }
+        
+        sessionCallbacks.remove(sessionId)
+    }
+    
+    /**
+     * 订阅频道
+     */
+    fun subscribe(sessionId: String, channel: String, payload: Map<*, *>?) {
+        logger.info("订阅频道: $sessionId -> $channel")
+        
+        // 记录订阅关系
+        sessionSubscriptions.getOrPut(sessionId) { mutableSetOf() }.add(channel)
+        channelSubscriptions.getOrPut(channel) { mutableSetOf() }.add(sessionId)
+        
+        // 发送订阅确认
+        sendSubscribeAck(sessionId, channel, true)
+        
+        // 根据频道类型启动推送服务
+        when (channel) {
+            "position" -> {
+                positionPushService.subscribe(sessionId) { message ->
+                    pushData(sessionId, channel, message)
+                }
+            }
+            "order" -> {
+                orderPushService.subscribe(sessionId, payload) { message ->
+                    pushData(sessionId, channel, message)
+                }
+            }
+            else -> {
+                logger.warn("未知的频道: $channel")
+                sendSubscribeAck(sessionId, channel, false, "未知的频道")
+            }
+        }
+    }
+    
+    /**
+     * 取消订阅
+     */
+    fun unsubscribe(sessionId: String, channel: String) {
+        logger.info("取消订阅频道: $sessionId -> $channel")
+        
+        // 移除订阅关系
+        sessionSubscriptions[sessionId]?.remove(channel)
+        channelSubscriptions[channel]?.remove(sessionId)
+        
+        // 如果频道没有订阅者了，停止推送服务
+        if (channelSubscriptions[channel]?.isEmpty() == true) {
+            when (channel) {
+                "position" -> positionPushService.unsubscribe(sessionId)
+                "order" -> orderPushService.unsubscribe(sessionId)
+            }
+        }
+    }
+    
+    /**
+     * 推送数据到指定会话
+     */
+    private fun pushData(sessionId: String, channel: String, payload: Any) {
+        val callback = sessionCallbacks[sessionId]
+        if (callback != null) {
+            val message = WebSocketMessage(
+                type = WebSocketMessageType.DATA,
+                channel = channel,
+                payload = payload,
+                timestamp = System.currentTimeMillis()
+            )
+            callback(message)
+        }
+    }
+    
+    /**
+     * 发送订阅确认
+     */
+    private fun sendSubscribeAck(sessionId: String, channel: String, success: Boolean, errorMessage: String? = null) {
+        val callback = sessionCallbacks[sessionId]
+        if (callback != null) {
+            val message = WebSocketMessage(
+                type = WebSocketMessageType.SUB_ACK.value,
+                channel = channel,
+                status = if (success) 0 else 1,  // 0: success, 非0: error
+                message = errorMessage
+            )
+            callback(message)
+        }
+    }
+}
+```
+
+### 5.4 频道推送服务接口
+
+**文件**: `backend/src/main/kotlin/com/wrbug/polymarketbot/service/PositionPushService.kt`
+
+需要修改 `PositionPushService`，添加订阅接口：
+
+```kotlin
+/**
+ * 订阅仓位推送
+ */
+fun subscribe(sessionId: String, callback: (PositionPushMessage) -> Unit) {
+    // 注册回调
+    clientCallbacks[sessionId] = callback
+    
+    // 如果是第一个订阅者，启动轮询
+    if (clientCallbacks.size == 1) {
+        startPolling()
+    }
+    
+    // 立即发送全量数据
+    scope.launch {
+        sendFullData(sessionId)
+    }
+}
+
+/**
+ * 取消订阅仓位推送
+ */
+fun unsubscribe(sessionId: String) {
+    clientCallbacks.remove(sessionId)
+    
+    // 如果没有订阅者了，停止轮询
+    if (clientCallbacks.isEmpty()) {
+        stopPolling()
+    }
+}
+```
+
+## 6. 配置更新
+
+### 6.1 WebSocket 配置
+
+**文件**: `backend/src/main/kotlin/com/wrbug/polymarketbot/config/WebSocketConfig.kt`
+
+```kotlin
+override fun registerWebSocketHandlers(registry: WebSocketHandlerRegistry) {
+    // 统一 WebSocket 端点
+    registry.addHandler(unifiedWebSocketHandler, "/ws")
+        .setAllowedOrigins("*")
+}
+```
+
+### 6.2 配置文件
+
+**文件**: `backend/src/main/resources/application.properties`
+
+```properties
+# WebSocket 配置
+websocket.heartbeat-timeout=${WEBSOCKET_HEARTBEAT_TIMEOUT:60000}
+```
+
+## 7. 迁移计划
+
+### 7.1 阶段一：后端重构
+1. 创建统一 WebSocket 处理器
+2. 创建订阅管理服务
+3. 重构 PositionPushService 支持订阅接口
+4. 更新 WebSocket 配置
+
+### 7.2 阶段二：前端重构
+1. 创建全局 WebSocket 管理器
+2. 创建 React Hook
+3. 重构 PositionList 页面使用新接口
+4. 移除旧的 WebSocket 连接代码
+
+### 7.3 阶段三：测试验证
+1. 测试订阅/取消订阅
+2. 测试多订阅者场景
+3. 测试重连机制
+4. 测试数据分发
+
+## 8. 优势
+
+1. **统一管理**：所有推送服务共用一个连接，减少资源消耗
+2. **易于扩展**：添加新频道只需实现推送服务接口
+3. **避免重复**：前端统一管理，避免重复订阅
+4. **数据分发**：后端推送一次，前端分发到多个订阅者
+5. **可维护性**：清晰的架构，易于维护和调试
+
+## 9. 注意事项
+
+1. **消息格式**：确保前后端消息格式一致
+2. **错误处理**：完善的错误处理和日志记录
+3. **性能优化**：大量订阅者时注意性能
+4. **向后兼容**：迁移时保持向后兼容
+5. **测试覆盖**：充分测试各种场景
+
diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index e064b14..6d37c5a 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -1,3 +1,4 @@
+import { useEffect } from 'react'
 import { BrowserRouter, Routes, Route } from 'react-router-dom'
 import { ConfigProvider } from 'antd'
 import zhCN from 'antd/locale/zh_CN'
@@ -11,8 +12,20 @@ import LeaderAdd from './pages/LeaderAdd'
 import ConfigPage from './pages/ConfigPage'
 import PositionList from './pages/PositionList'
 import Statistics from './pages/Statistics'
+import { wsManager } from './services/websocket'
 
 function App() {
+  // 应用启动时立即建立全局 WebSocket 连接
+  useEffect(() => {
+    // 立即建立连接（如果还未连接）
+    if (!wsManager.isConnected()) {
+      wsManager.connect()
+    }
+    
+    // 注意：应用不会卸载，所以不需要在 cleanup 中断开连接
+    // WebSocket 连接会在整个应用生命周期中保持，并自动重连
+  }, [])
+  
   return (
     <ConfigProvider locale={zhCN}>
       <BrowserRouter>
diff --git a/frontend/src/hooks/useWebSocket.ts b/frontend/src/hooks/useWebSocket.ts
new file mode 100644
index 0000000..85dbe87
--- /dev/null
+++ b/frontend/src/hooks/useWebSocket.ts
@@ -0,0 +1,40 @@
+import { useEffect, useState, useRef } from 'react'
+import { wsManager, SubscriptionCallback } from '../services/websocket'
+
+/**
+ * 使用 WebSocket 订阅
+ */
+export function useWebSocketSubscription<T = any>(
+  channel: string,
+  callback: SubscriptionCallback,
+  payload?: any
+): { connected: boolean } {
+  const [connected, setConnected] = useState(wsManager.isConnected())
+  const callbackRef = useRef(callback)
+  
+  // 更新回调引用
+  useEffect(() => {
+    callbackRef.current = callback
+  }, [callback])
+  
+  useEffect(() => {
+    // 订阅频道（连接已在 App.tsx 中全局建立，这里只需要订阅）
+    const unsubscribe = wsManager.subscribe(channel, (data) => {
+      callbackRef.current(data)
+    }, payload)
+    
+    // 监听连接状态（连接在 App.tsx 中全局管理，这里只监听状态变化）
+    const removeConnectionListener = wsManager.onConnectionChange(setConnected)
+    
+    // 初始化连接状态
+    setConnected(wsManager.isConnected())
+    
+    return () => {
+      unsubscribe()
+      removeConnectionListener()
+    }
+  }, [channel, payload])
+  
+  return { connected }
+}
+
diff --git a/frontend/src/pages/PositionList.tsx b/frontend/src/pages/PositionList.tsx
index 87a7c57..08b1dd0 100644
--- a/frontend/src/pages/PositionList.tsx
+++ b/frontend/src/pages/PositionList.tsx
@@ -2,8 +2,11 @@ import { useEffect, useState, useMemo } from 'react'
 import { Card, Table, Tag, message, Space, Input, Radio, Select, Button, Row, Col, Empty } from 'antd'
 import { SearchOutlined, AppstoreOutlined, UnorderedListOutlined, UpOutlined, DownOutlined } from '@ant-design/icons'
 import { apiService } from '../services/api'
-import type { AccountPosition, Account } from '../types'
+import type { AccountPosition, Account, PositionPushMessage } from '../types'
+import { getPositionKey } from '../types'
 import { useMediaQuery } from 'react-responsive'
+import { useWebSocketSubscription } from '../hooks/useWebSocket'
+import { wsManager } from '../services/websocket'
 
 type PositionFilter = 'current' | 'historical'
 type ViewMode = 'card' | 'list'
@@ -20,12 +23,118 @@ const PositionList: React.FC = () => {
   const [selectedAccountId, setSelectedAccountId] = useState<number | undefined>(undefined)
   const [viewMode, setViewMode] = useState<ViewMode>(isMobile ? 'card' : 'list')
   const [expandedCards, setExpandedCards] = useState<Set<string>>(new Set())
+  const [wsConnected, setWsConnected] = useState(false)
   
   useEffect(() => {
     fetchAccounts()
-    fetchPositions()
+    // 完全依赖 WebSocket 推送，不主动请求接口
+    // 连接建立后会立即收到全量数据推送
+    setLoading(true)  // 显示加载状态，等待 WebSocket 全量推送
+    
+    // 监听连接状态（WebSocket 连接在 App.tsx 中全局初始化，全局共享）
+    const removeListener = wsManager.onConnectionChange((connected) => {
+      setWsConnected(connected)
+    })
+    
+    // 获取当前连接状态
+    setWsConnected(wsManager.isConnected())
+    
+    return () => {
+      removeListener()
+    }
   }, [])
   
+  // 订阅仓位推送
+  const { connected: positionConnected } = useWebSocketSubscription<PositionPushMessage>(
+    'position',
+    (message) => {
+      handlePositionPushMessage(message)
+    }
+  )
+  
+  // 更新连接状态（使用订阅的连接状态）
+  useEffect(() => {
+    setWsConnected(positionConnected)
+  }, [positionConnected])
+  
+  /**
+   * 处理仓位推送消息
+   */
+  const handlePositionPushMessage = (message: PositionPushMessage) => {
+    if (message.type === 'FULL') {
+      // 全量推送：直接替换（这是首次连接时的数据，完全以推送数据为准）
+      setCurrentPositions(message.currentPositions || [])
+      setHistoryPositions(message.historyPositions || [])
+      setLoading(false)
+      console.log('收到仓位全量推送:', {
+        current: message.currentPositions?.length || 0,
+        history: message.historyPositions?.length || 0
+      })
+    } else if (message.type === 'INCREMENTAL') {
+      // 增量推送：合并数据（始终以推送数据为准）
+      setCurrentPositions(prev => mergePositions(prev, message.currentPositions || [], message.removedPositionKeys || []))
+      setHistoryPositions(prev => mergePositions(prev, message.historyPositions || [], message.removedPositionKeys || []))
+      console.log('收到仓位增量推送:', {
+        current: message.currentPositions?.length || 0,
+        history: message.historyPositions?.length || 0,
+        removed: message.removedPositionKeys?.length || 0
+      })
+    }
+  }
+  
+  /**
+   * 合并仓位数据
+   * 新增的仓位插入到列表顶部，更新的仓位更新现有数据并保持位置，删除的仓位从列表中移除
+   */
+  const mergePositions = (
+    prev: AccountPosition[],
+    updates: AccountPosition[],
+    removedKeys: string[]
+  ): AccountPosition[] => {
+    // 创建现有仓位的键集合，用于快速判断是新增还是更新
+    const existingKeys = new Set(prev.map(pos => getPositionKey(pos)))
+    
+    // 区分新增和更新的仓位
+    const newPositions: AccountPosition[] = []
+    const updateMap = new Map<string, AccountPosition>()
+    
+    updates.forEach(update => {
+      const key = getPositionKey(update)
+      if (existingKeys.has(key)) {
+        // 已存在的仓位，记录更新
+        updateMap.set(key, update)
+      } else {
+        // 新增的仓位，插入到顶部
+        newPositions.push(update)
+      }
+    })
+    
+    // 构建结果数组
+    const result: AccountPosition[] = []
+    
+    // 1. 先添加新增的仓位（在顶部）
+    result.push(...newPositions)
+    
+    // 2. 遍历原有仓位，应用更新或保持不变
+    prev.forEach(pos => {
+      const key = getPositionKey(pos)
+      
+      // 如果被删除，跳过
+      if (removedKeys.includes(key)) {
+        return
+      }
+      
+      // 如果有更新，使用新数据；否则保持原数据
+      if (updateMap.has(key)) {
+        result.push(updateMap.get(key)!)
+      } else {
+        result.push(pos)
+      }
+    })
+    
+    return result
+  }
+  
   const fetchAccounts = async () => {
     setAccountsLoading(true)
     try {
@@ -42,22 +151,7 @@ const PositionList: React.FC = () => {
     }
   }
   
-  const fetchPositions = async () => {
-    setLoading(true)
-    try {
-      const response = await apiService.accounts.positionsList()
-      if (response.data.code === 0 && response.data.data) {
-        setCurrentPositions(response.data.data.currentPositions || [])
-        setHistoryPositions(response.data.data.historyPositions || [])
-      } else {
-        message.error(response.data.msg || '获取仓位列表失败')
-      }
-    } catch (error: any) {
-      message.error(error.message || '获取仓位列表失败')
-    } finally {
-      setLoading(false)
-    }
-  }
+  // 已移除 fetchPositions 函数，完全依赖 WebSocket 推送更新数据
   
   // 根据筛选器选择对应的仓位列表
   const basePositions = useMemo(() => {
@@ -657,7 +751,25 @@ const PositionList: React.FC = () => {
     <div>
       <div style={{ marginBottom: '16px' }}>
         <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', flexWrap: 'wrap', gap: '12px', marginBottom: '12px' }}>
-          <h2 style={{ margin: 0 }}>仓位管理</h2>
+          <div style={{ display: 'flex', alignItems: 'center', gap: '12px' }}>
+            <h2 style={{ margin: 0 }}>仓位管理</h2>
+            {/* WebSocket 连接状态指示器 */}
+            <Tag 
+              color={wsConnected ? 'green' : 'orange'} 
+              style={{ margin: 0 }}
+            >
+              <span style={{ 
+                display: 'inline-block', 
+                width: '8px', 
+                height: '8px', 
+                borderRadius: '50%', 
+                backgroundColor: wsConnected ? '#52c41a' : '#fa8c16', 
+                marginRight: '6px', 
+                animation: wsConnected ? 'pulse 2s infinite' : 'pulse 1s infinite'
+              }}></span>
+              {wsConnected ? '实时更新' : '连接中...'}
+            </Tag>
+          </div>
           <div style={{ display: 'flex', alignItems: 'center', gap: '12px', flex: isMobile ? '1 1 100%' : '0 0 auto', flexWrap: 'wrap' }}>
             <Input
               placeholder="搜索账户、市场、方向..."
diff --git a/frontend/src/services/websocket.ts b/frontend/src/services/websocket.ts
new file mode 100644
index 0000000..c6004ef
--- /dev/null
+++ b/frontend/src/services/websocket.ts
@@ -0,0 +1,356 @@
+/**
+ * WebSocket 消息类型（int 值）
+ */
+export enum WebSocketMessageType {
+  SUB = 1,        // 订阅
+  UNSUB = 2,      // 取消订阅
+  DATA = 3,       // 数据推送
+  SUB_ACK = 4,    // 订阅确认
+  PING = 5,       // 心跳
+  PONG = 6        // 心跳响应
+}
+
+/**
+ * WebSocket 消息
+ */
+export interface WebSocketMessage {
+  type: number  // WebSocketMessageType 的 int 值（1:SUB, 2:UNSUB, 3:DATA, 4:SUB_ACK, 5:PING, 6:PONG）
+  channel?: string
+  payload?: any
+  timestamp?: number
+  status?: number  // 0: success, 非0: error
+  message?: string
+}
+
+/**
+ * 订阅回调函数
+ */
+export type SubscriptionCallback = (data: any) => void
+
+/**
+ * 全局 WebSocket 管理器
+ */
+class WebSocketManager {
+  private ws: WebSocket | null = null
+  private reconnectTimer: NodeJS.Timeout | null = null
+  private pingInterval: NodeJS.Timeout | null = null
+  private isConnecting = false
+  private isUnmounting = false
+  
+  // 订阅管理：channel -> Set<callback>
+  private subscriptions = new Map<string, Set<SubscriptionCallback>>()
+  
+  // 订阅状态：channel -> boolean（是否已向后端订阅）
+  private subscribedChannels = new Set<string>()
+  
+  // 连接状态回调
+  private connectionCallbacks: Set<(connected: boolean) => void> = new Set()
+  
+  private reconnectDelay = 3000
+  private pingIntervalTime = 30000
+  
+  /**
+   * 连接 WebSocket（全局共享连接）
+   */
+  connect(): void {
+    // 如果已经连接或正在连接，直接返回
+    if (this.ws?.readyState === WebSocket.OPEN || this.isConnecting) {
+      return
+    }
+    
+    // 如果正在卸载，不允许连接
+    if (this.isUnmounting) {
+      return
+    }
+    
+    this.isConnecting = true
+    const wsUrl = this.getWebSocketUrl()
+    console.log('[WebSocket] 正在连接:', wsUrl)
+    
+    try {
+      // 如果已经有连接（但状态不是 OPEN），先关闭
+      if (this.ws) {
+        try {
+          this.ws.close()
+        } catch (e) {
+          // 忽略关闭错误
+        }
+        this.ws = null
+      }
+      
+      const ws = new WebSocket(wsUrl)
+      this.ws = ws
+      
+      ws.onopen = () => {
+        console.log('[WebSocket] 连接成功')
+        this.isConnecting = false
+        this.notifyConnectionStatus(true)
+        this.startPing()
+        this.resubscribeAll()  // 重新订阅所有频道
+      }
+      
+      ws.onmessage = (event) => {
+        this.handleMessage(event.data)
+      }
+      
+      ws.onerror = (error) => {
+        console.error('[WebSocket] 连接错误:', error)
+        this.isConnecting = false
+        this.notifyConnectionStatus(false)
+      }
+      
+      ws.onclose = () => {
+        console.log('[WebSocket] 连接关闭')
+        this.isConnecting = false
+        this.notifyConnectionStatus(false)
+        this.stopPing()
+        // 自动重连（除非正在卸载）
+        if (!this.isUnmounting) {
+          this.scheduleReconnect()
+        }
+      }
+    } catch (error) {
+      console.error('[WebSocket] 创建连接失败:', error)
+      this.isConnecting = false
+      this.notifyConnectionStatus(false)
+      // 自动重连（除非正在卸载）
+      if (!this.isUnmounting) {
+        this.scheduleReconnect()
+      }
+    }
+  }
+  
+  /**
+   * 断开连接（仅在应用完全卸载时调用）
+   */
+  disconnect(): void {
+    console.log('[WebSocket] 断开连接')
+    this.isUnmounting = true
+    this.stopPing()
+    if (this.reconnectTimer) {
+      clearTimeout(this.reconnectTimer)
+      this.reconnectTimer = null
+    }
+    if (this.ws) {
+      try {
+        this.ws.close()
+      } catch (e) {
+        // 忽略关闭错误
+      }
+      this.ws = null
+    }
+    this.notifyConnectionStatus(false)
+  }
+  
+  /**
+   * 订阅频道
+   */
+  subscribe(channel: string, callback: SubscriptionCallback, payload?: any): () => void {
+    // 添加订阅者
+    if (!this.subscriptions.has(channel)) {
+      this.subscriptions.set(channel, new Set())
+    }
+    this.subscriptions.get(channel)!.add(callback)
+    
+    // 如果还未向后端订阅，发送订阅消息
+    if (!this.subscribedChannels.has(channel)) {
+      this.sendSubscribe(channel, payload)
+    }
+    
+    // 返回取消订阅函数
+    return () => {
+      this.unsubscribe(channel, callback)
+    }
+  }
+  
+  /**
+   * 取消订阅
+   */
+  unsubscribe(channel: string, callback: SubscriptionCallback): void {
+    const callbacks = this.subscriptions.get(channel)
+    if (callbacks) {
+      callbacks.delete(callback)
+      
+      // 如果没有订阅者了，向后端取消订阅
+      if (callbacks.size === 0) {
+        this.subscriptions.delete(channel)
+        this.sendUnsubscribe(channel)
+        this.subscribedChannels.delete(channel)
+      }
+    }
+  }
+  
+  /**
+   * 发送订阅消息
+   */
+  private sendSubscribe(channel: string, payload?: any): void {
+    if (this.ws?.readyState === WebSocket.OPEN) {
+      const message: WebSocketMessage = {
+        type: WebSocketMessageType.SUB,
+        channel,
+        payload
+      }
+      this.ws.send(JSON.stringify(message))
+      this.subscribedChannels.add(channel)
+      console.log('已订阅频道:', channel)
+    } else {
+      // 如果连接未建立，先连接
+      this.connect()
+      // 连接建立后会通过 resubscribeAll 自动订阅
+    }
+  }
+  
+  /**
+   * 发送取消订阅消息
+   */
+  private sendUnsubscribe(channel: string): void {
+    if (this.ws?.readyState === WebSocket.OPEN) {
+      const message: WebSocketMessage = {
+        type: WebSocketMessageType.UNSUB,
+        channel
+      }
+      this.ws.send(JSON.stringify(message))
+      console.log('已取消订阅频道:', channel)
+    }
+  }
+  
+  /**
+   * 处理收到的消息
+   */
+  private handleMessage(data: string): void {
+    // 处理心跳
+    if (data === 'PONG') {
+      return
+    }
+    
+    try {
+      const message: WebSocketMessage = JSON.parse(data)
+      
+      if (message.type === WebSocketMessageType.DATA && message.channel) {
+        // 数据推送：分发到订阅者
+        const callbacks = this.subscriptions.get(message.channel)
+        if (callbacks) {
+          callbacks.forEach(callback => {
+            try {
+              callback(message.payload)
+            } catch (error) {
+              console.error(`频道 ${message.channel} 回调执行失败:`, error)
+            }
+          })
+        }
+      } else if (message.type === WebSocketMessageType.SUB_ACK) {
+        // 订阅确认
+        if (message.status !== undefined && message.status !== 0) {
+          console.error(`订阅频道 ${message.channel} 失败:`, message.message)
+          this.subscribedChannels.delete(message.channel || '')
+        } else {
+          console.log(`订阅频道 ${message.channel} 成功`)
+        }
+      }
+    } catch (error) {
+      console.error('解析 WebSocket 消息失败:', error)
+    }
+  }
+  
+  /**
+   * 重新订阅所有频道
+   */
+  private resubscribeAll(): void {
+    this.subscribedChannels.clear()
+    this.subscriptions.forEach((callbacks, channel) => {
+      if (callbacks.size > 0) {
+        this.sendSubscribe(channel)
+      }
+    })
+  }
+  
+  /**
+   * 安排重连
+   */
+  private scheduleReconnect(): void {
+    if (this.isUnmounting) {
+      return
+    }
+    
+    if (this.reconnectTimer) {
+      clearTimeout(this.reconnectTimer)
+    }
+    
+    this.reconnectTimer = setTimeout(() => {
+      this.connect()
+    }, this.reconnectDelay)
+  }
+  
+  /**
+   * 开始心跳
+   */
+  private startPing(): void {
+    this.stopPing()
+    
+    // 立即发送一次心跳
+    const sendPing = () => {
+      if (this.ws?.readyState === WebSocket.OPEN) {
+        this.ws.send('PING')
+        console.log('发送心跳: PING')
+      }
+    }
+    
+    sendPing()
+    
+    // 每30秒发送一次心跳
+    this.pingInterval = setInterval(sendPing, this.pingIntervalTime)
+  }
+  
+  /**
+   * 停止心跳
+   */
+  private stopPing(): void {
+    if (this.pingInterval) {
+      clearInterval(this.pingInterval)
+      this.pingInterval = null
+    }
+  }
+  
+  /**
+   * 获取 WebSocket URL
+   */
+  private getWebSocketUrl(): string {
+    const protocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:'
+    const host = window.location.host
+    return `${protocol}//${host}/ws`
+  }
+  
+  /**
+   * 注册连接状态回调
+   */
+  onConnectionChange(callback: (connected: boolean) => void): () => void {
+    this.connectionCallbacks.add(callback)
+    return () => {
+      this.connectionCallbacks.delete(callback)
+    }
+  }
+  
+  /**
+   * 通知连接状态变化
+   */
+  private notifyConnectionStatus(connected: boolean): void {
+    this.connectionCallbacks.forEach(callback => {
+      try {
+        callback(connected)
+      } catch (error) {
+        console.error('连接状态回调执行失败:', error)
+      }
+    })
+  }
+  
+  /**
+   * 获取连接状态
+   */
+  isConnected(): boolean {
+    return this.ws?.readyState === WebSocket.OPEN
+  }
+}
+
+// 导出单例
+export const wsManager = new WebSocketManager()
+
diff --git a/frontend/src/styles/index.css b/frontend/src/styles/index.css
index ede5a37..6617863 100644
--- a/frontend/src/styles/index.css
+++ b/frontend/src/styles/index.css
@@ -30,3 +30,13 @@ body {
   }
 }
 
+/* WebSocket 连接状态动画 */
+@keyframes pulse {
+  0%, 100% {
+    opacity: 1;
+  }
+  50% {
+    opacity: 0.5;
+  }
+}
+
diff --git a/frontend/src/types/index.ts b/frontend/src/types/index.ts
index 39044f0..b9c3afa 100644
--- a/frontend/src/types/index.ts
+++ b/frontend/src/types/index.ts
@@ -187,3 +187,26 @@ export interface PositionListResponse {
   historyPositions: AccountPosition[]
 }
 
+/**
+ * 仓位推送消息类型
+ */
+export type PositionPushMessageType = 'FULL' | 'INCREMENTAL'
+
+/**
+ * 仓位推送消息
+ */
+export interface PositionPushMessage {
+  type: PositionPushMessageType  // 消息类型：FULL（全量）或 INCREMENTAL（增量）
+  timestamp: number  // 消息时间戳
+  currentPositions?: AccountPosition[]  // 当前仓位列表（全量或增量）
+  historyPositions?: AccountPosition[]  // 历史仓位列表（全量或增量）
+  removedPositionKeys?: string[]  // 已删除的仓位键（仅增量推送时使用）
+}
+
+/**
+ * 获取仓位唯一键
+ */
+export function getPositionKey(position: AccountPosition): string {
+  return `${position.accountId}-${position.marketId}-${position.side}`
+}
+
diff --git a/frontend/vite.config.ts b/frontend/vite.config.ts
index 4618432..f9c6211 100644
--- a/frontend/vite.config.ts
+++ b/frontend/vite.config.ts
@@ -10,6 +10,11 @@ export default defineConfig({
       '/api': {
         target: 'http://localhost:8000',
         changeOrigin: true
+      },
+      '/ws': {
+        target: 'ws://localhost:8000',
+        ws: true,
+        changeOrigin: true
       }
     }
   }