diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/PolymarketBotApplication.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/PolymarketBotApplication.kt
index a8404f8..c48c2f7 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/PolymarketBotApplication.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/PolymarketBotApplication.kt
@@ -2,8 +2,10 @@ package com.wrbug.polymarketbot
 
 import org.springframework.boot.autoconfigure.SpringBootApplication
 import org.springframework.boot.runApplication
+import org.springframework.scheduling.annotation.EnableScheduling
 
 @SpringBootApplication
+@EnableScheduling
 class PolymarketBotApplication
 
 fun main(args: Array<String>) {
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/entity/SellMatchRecord.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/entity/SellMatchRecord.kt
index 048905c..04e8e2d 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/entity/SellMatchRecord.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/entity/SellMatchRecord.kt
@@ -41,6 +41,9 @@ data class SellMatchRecord(
     @Column(name = "total_realized_pnl", nullable = false, precision = 20, scale = 8)
     val totalRealizedPnl: BigDecimal,  // 总已实现盈亏
     
+    @Column(name = "price_updated", nullable = false)
+    var priceUpdated: Boolean = false,  // 价格是否已更新（从订单详情获取实际成交价）
+    
     @Column(name = "created_at", nullable = false)
     val createdAt: Long = System.currentTimeMillis()
 )
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/repository/SellMatchRecordRepository.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/repository/SellMatchRecordRepository.kt
index 7b8cb17..47a7e24 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/repository/SellMatchRecordRepository.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/repository/SellMatchRecordRepository.kt
@@ -24,5 +24,10 @@ interface SellMatchRecordRepository : JpaRepository<SellMatchRecord, Long> {
      * 根据Leader卖出交易ID查询记录
      */
     fun findByLeaderSellTradeId(leaderSellTradeId: String): SellMatchRecord?
+    
+    /**
+     * 查询所有价格未更新的卖出记录
+     */
+    fun findByPriceUpdatedFalse(): List<SellMatchRecord>
 }
 
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/copytrading/statistics/CopyOrderTrackingService.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/copytrading/statistics/CopyOrderTrackingService.kt
index fade4c3..0ff7c86 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/copytrading/statistics/CopyOrderTrackingService.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/copytrading/statistics/CopyOrderTrackingService.kt
@@ -567,6 +567,12 @@ open class CopyOrderTrackingService(
                     }
 
                     val realOrderId = createOrderResult.getOrNull() ?: continue
+                    
+                    // 验证 orderId 格式（必须以 0x 开头的 16 进制）
+                    if (!isValidOrderId(realOrderId)) {
+                        logger.warn("买入订单ID格式无效，跳过保存: orderId=$realOrderId")
+                        continue
+                    }
 
                     // 创建买入订单跟踪记录（使用真实订单ID，使用outcomeIndex）
                     val tracking = CopyOrderTracking(
@@ -942,8 +948,20 @@ open class CopyOrderTrackingService(
         }
 
         val realSellOrderId = createOrderResult.getOrNull() ?: return
+        
+        // 12. 下单时直接使用下单价格保存，等待定时任务更新实际成交价
+        // priceUpdated 统一由定时任务更新，下单时统一设置为 false（非0x开头的除外）
+        val priceUpdated = !realSellOrderId.startsWith("0x", ignoreCase = true)
+        if (priceUpdated) {
+            logger.debug("卖出订单ID非0x开头，标记为已更新: orderId=$realSellOrderId")
+        } else {
+            logger.debug("卖出订单ID为0x开头，等待定时任务更新价格: orderId=$realSellOrderId")
+        }
+        
+        // 使用下单价格，等待定时任务更新实际成交价
+        val actualSellPrice = sellPrice
 
-        // 12. 更新买入订单跟踪状态
+        // 13. 更新买入订单跟踪状态
         for (order in unmatchedOrders) {
             val detail = matchDetails.find { it.trackingId == order.id }
             if (detail != null) {
@@ -956,8 +974,17 @@ open class CopyOrderTrackingService(
             }
         }
 
-        // 13. 创建卖出匹配记录（使用真实订单ID，使用outcomeIndex）
-        val totalRealizedPnl = matchDetails.sumOf { it.realizedPnl.toSafeBigDecimal() }
+        // 14. 重新计算盈亏（使用实际成交价）
+        val updatedMatchDetails = matchDetails.map { detail ->
+            val updatedRealizedPnl = actualSellPrice.subtract(detail.buyPrice).multi(detail.matchedQuantity)
+            detail.copy(
+                sellPrice = actualSellPrice,
+                realizedPnl = updatedRealizedPnl
+            )
+        }
+
+        // 15. 创建卖出匹配记录（使用真实订单ID和实际成交价）
+        val totalRealizedPnl = updatedMatchDetails.sumOf { it.realizedPnl.toSafeBigDecimal() }
 
         val matchRecord = SellMatchRecord(
             copyTradingId = copyTrading.id,
@@ -967,14 +994,15 @@ open class CopyOrderTrackingService(
             side = leaderSellTrade.outcomeIndex.toString(),  // 使用outcomeIndex作为side（兼容旧数据）
             outcomeIndex = leaderSellTrade.outcomeIndex,  // 新增字段
             totalMatchedQuantity = totalMatched,
-            sellPrice = sellPrice,
-            totalRealizedPnl = totalRealizedPnl
+            sellPrice = actualSellPrice,  // 使用实际成交价（如果查询失败则为下单价格）
+            totalRealizedPnl = totalRealizedPnl,
+            priceUpdated = priceUpdated  // 标记价格是否已更新
         )
 
         val savedRecord = sellMatchRecordRepository.save(matchRecord)
 
-        // 14. 保存匹配明细
-        for (detail in matchDetails) {
+        // 16. 保存匹配明细（使用实际成交价）
+        for (detail in updatedMatchDetails) {
             val savedDetail = detail.copy(matchRecordId = savedRecord.id!!)
             sellMatchDetailRepository.save(savedDetail)
         }
@@ -1382,6 +1410,111 @@ open class CopyOrderTrackingService(
         }
     }
 
+    /**
+     * 验证订单ID格式
+     * 订单ID必须以 0x 开头，且是有效的 16 进制字符串
+     * 
+     * @param orderId 订单ID
+     * @return 如果格式有效返回 true，否则返回 false
+     */
+    private fun isValidOrderId(orderId: String): Boolean {
+        if (!orderId.startsWith("0x", ignoreCase = true)) {
+            return false
+        }
+        // 验证是否为有效的 16 进制字符串（去除 0x 前缀后）
+        val hexPart = orderId.substring(2)
+        if (hexPart.isEmpty()) {
+            return false
+        }
+        // 检查是否只包含 0-9, a-f, A-F
+        return hexPart.all { it in '0'..'9' || it in 'a'..'f' || it in 'A'..'F' }
+    }
+    
+    /**
+     * 获取订单的实际成交价
+     * 通过查询订单详情和关联的交易记录，计算加权平均成交价
+     * 
+     * @param orderId 订单ID
+     * @param clobApi CLOB API 客户端（已认证）
+     * @param fallbackPrice 如果查询失败，使用此价格作为默认值
+     * @return 实际成交价（加权平均），如果查询失败则返回 fallbackPrice
+     */
+    suspend fun getActualExecutionPrice(
+        orderId: String,
+        clobApi: PolymarketClobApi,
+        fallbackPrice: BigDecimal
+    ): BigDecimal {
+        return try {
+            // 1. 查询订单详情
+            val orderResponse = clobApi.getOrder(orderId)
+            if (!orderResponse.isSuccessful || orderResponse.body() == null) {
+                logger.warn("查询订单详情失败: orderId=$orderId, code=${orderResponse.code()}")
+                return fallbackPrice
+            }
+
+            val order = orderResponse.body()!!
+            
+            // 2. 如果订单未成交，使用下单价格
+            if (order.status != "FILLED" && order.sizeMatched.toSafeBigDecimal() <= BigDecimal.ZERO) {
+                logger.debug("订单未成交，使用下单价格: orderId=$orderId, status=${order.status}")
+                return fallbackPrice
+            }
+
+            // 3. 如果订单已成交，通过 associateTrades 获取交易记录
+            val associateTrades = order.associateTrades
+            if (associateTrades.isNullOrEmpty()) {
+                logger.debug("订单无关联交易记录，使用下单价格: orderId=$orderId")
+                return fallbackPrice
+            }
+
+            // 4. 查询所有关联的交易记录
+            val trades = mutableListOf<TradeResponse>()
+            for (tradeId in associateTrades) {
+                try {
+                    val tradesResponse = clobApi.getTrades(id = tradeId)
+                    if (tradesResponse.isSuccessful && tradesResponse.body() != null) {
+                        val tradesData = tradesResponse.body()!!.data
+                        trades.addAll(tradesData)
+                    }
+                } catch (e: Exception) {
+                    logger.warn("查询交易记录失败: tradeId=$tradeId, error=${e.message}")
+                }
+            }
+
+            if (trades.isEmpty()) {
+                logger.debug("未找到交易记录，使用下单价格: orderId=$orderId")
+                return fallbackPrice
+            }
+
+            // 5. 计算加权平均成交价
+            // 加权平均 = Σ(price * size) / Σ(size)
+            var totalAmount = BigDecimal.ZERO
+            var totalSize = BigDecimal.ZERO
+
+            for (trade in trades) {
+                val tradePrice = trade.price.toSafeBigDecimal()
+                val tradeSize = trade.size.toSafeBigDecimal()
+                
+                if (tradeSize > BigDecimal.ZERO) {
+                    totalAmount = totalAmount.add(tradePrice.multiply(tradeSize))
+                    totalSize = totalSize.add(tradeSize)
+                }
+            }
+
+            if (totalSize > BigDecimal.ZERO) {
+                val weightedAveragePrice = totalAmount.divide(totalSize, 8, java.math.RoundingMode.HALF_UP)
+                logger.info("计算实际成交价成功: orderId=$orderId, 加权平均价=$weightedAveragePrice, 下单价格=$fallbackPrice, 交易笔数=${trades.size}")
+                return weightedAveragePrice
+            } else {
+                logger.warn("交易记录数量为0，使用下单价格: orderId=$orderId")
+                return fallbackPrice
+            }
+        } catch (e: Exception) {
+            logger.error("获取实际成交价异常: orderId=$orderId, error=${e.message}", e)
+            return fallbackPrice
+        }
+    }
+
     /**
      * 从trade中提取side（结果名称）
      *
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/copytrading/statistics/OrderStatusUpdateService.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/copytrading/statistics/OrderStatusUpdateService.kt
new file mode 100644
index 0000000..f578dbd
--- /dev/null
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/copytrading/statistics/OrderStatusUpdateService.kt
@@ -0,0 +1,289 @@
+package com.wrbug.polymarketbot.service.copytrading.statistics
+
+import com.wrbug.polymarketbot.api.PolymarketClobApi
+import com.wrbug.polymarketbot.entity.*
+import com.wrbug.polymarketbot.repository.*
+import com.wrbug.polymarketbot.util.RetrofitFactory
+import com.wrbug.polymarketbot.util.CryptoUtils
+import com.wrbug.polymarketbot.util.toSafeBigDecimal
+import com.wrbug.polymarketbot.util.multi
+import kotlinx.coroutines.*
+import org.slf4j.LoggerFactory
+import org.springframework.boot.context.event.ApplicationReadyEvent
+import org.springframework.context.event.EventListener
+import org.springframework.scheduling.annotation.Scheduled
+import org.springframework.stereotype.Service
+import org.springframework.transaction.annotation.Transactional
+import java.math.BigDecimal
+
+/**
+ * 订单状态更新服务
+ * 定时轮询更新卖出订单的实际成交价，并清理已删除账户的订单
+ */
+@Service
+class OrderStatusUpdateService(
+    private val sellMatchRecordRepository: SellMatchRecordRepository,
+    private val sellMatchDetailRepository: SellMatchDetailRepository,
+    private val copyTradingRepository: CopyTradingRepository,
+    private val accountRepository: AccountRepository,
+    private val copyOrderTrackingRepository: CopyOrderTrackingRepository,
+    private val retrofitFactory: RetrofitFactory,
+    private val cryptoUtils: CryptoUtils,
+    private val trackingService: CopyOrderTrackingService
+) {
+    
+    private val logger = LoggerFactory.getLogger(OrderStatusUpdateService::class.java)
+    
+    private val updateScope = CoroutineScope(Dispatchers.IO + SupervisorJob())
+    
+    @EventListener(ApplicationReadyEvent::class)
+    fun onApplicationReady() {
+        logger.info("订单状态更新服务已启动，将每5秒轮询一次")
+    }
+    
+    /**
+     * 定时更新卖出订单价格
+     * 每5秒执行一次
+     */
+    @Scheduled(fixedDelay = 5000)
+    fun updateSellOrderPrices() {
+        updateScope.launch {
+            try {
+                // 1. 清理已删除账户的订单
+                cleanupDeletedAccountOrders()
+                
+                // 2. 更新卖出订单的实际成交价
+                updatePendingSellOrderPrices()
+            } catch (e: Exception) {
+                logger.error("订单状态更新异常: ${e.message}", e)
+            }
+        }
+    }
+    
+    /**
+     * 验证订单ID格式
+     * 订单ID必须以 0x 开头，且是有效的 16 进制字符串
+     * 
+     * @param orderId 订单ID
+     * @return 如果格式有效返回 true，否则返回 false
+     */
+    private fun isValidOrderId(orderId: String): Boolean {
+        if (!orderId.startsWith("0x", ignoreCase = true)) {
+            return false
+        }
+        // 验证是否为有效的 16 进制字符串（去除 0x 前缀后）
+        val hexPart = orderId.substring(2)
+        if (hexPart.isEmpty()) {
+            return false
+        }
+        // 检查是否只包含 0-9, a-f, A-F
+        return hexPart.all { it in '0'..'9' || it in 'a'..'f' || it in 'A'..'F' }
+    }
+    
+    /**
+     * 清理已删除账户的订单
+     */
+    @Transactional
+    private suspend fun cleanupDeletedAccountOrders() {
+        try {
+            // 查询所有卖出记录
+            val allRecords = sellMatchRecordRepository.findAll()
+            
+            // 查询所有有效的账户ID
+            val validAccountIds = accountRepository.findAll().mapNotNull { it.id }.toSet()
+            
+            // 查询所有有效的跟单关系
+            val validCopyTradingIds = copyTradingRepository.findAll()
+                .filter { it.accountId in validAccountIds }
+                .mapNotNull { it.id }
+                .toSet()
+            
+            // 找出需要删除的记录（关联的跟单关系已不存在或账户已删除）
+            val recordsToDelete = allRecords.filter { record ->
+                val copyTrading = copyTradingRepository.findById(record.copyTradingId).orElse(null)
+                copyTrading == null || copyTrading.accountId !in validAccountIds
+            }
+            
+            if (recordsToDelete.isNotEmpty()) {
+                logger.info("清理已删除账户的订单: ${recordsToDelete.size} 条记录")
+                
+                // 删除匹配明细
+                for (record in recordsToDelete) {
+                    val details = sellMatchDetailRepository.findByMatchRecordId(record.id!!)
+                    sellMatchDetailRepository.deleteAll(details)
+                }
+                
+                // 删除卖出记录
+                sellMatchRecordRepository.deleteAll(recordsToDelete)
+                
+                logger.info("已清理 ${recordsToDelete.size} 条已删除账户的订单记录")
+            }
+        } catch (e: Exception) {
+            logger.error("清理已删除账户订单异常: ${e.message}", e)
+        }
+    }
+    
+    /**
+     * 更新待更新的卖出订单价格
+     */
+    @Transactional
+    private suspend fun updatePendingSellOrderPrices() {
+        try {
+            // 查询所有价格未更新的卖出记录
+            val pendingRecords = sellMatchRecordRepository.findByPriceUpdatedFalse()
+            
+            if (pendingRecords.isEmpty()) {
+                return
+            }
+            
+            logger.debug("找到 ${pendingRecords.size} 条待更新价格的卖出订单")
+            
+            for (record in pendingRecords) {
+                try {
+                    // 获取跟单关系
+                    val copyTrading = copyTradingRepository.findById(record.copyTradingId).orElse(null)
+                    if (copyTrading == null) {
+                        logger.warn("跟单关系不存在，跳过更新: copyTradingId=${record.copyTradingId}")
+                        continue
+                    }
+                    
+                    // 获取账户
+                    val account = accountRepository.findById(copyTrading.accountId).orElse(null)
+                    if (account == null) {
+                        logger.warn("账户不存在，跳过更新: accountId=${copyTrading.accountId}")
+                        continue
+                    }
+                    
+                    // 检查账户是否配置了 API 凭证
+                    if (account.apiKey == null || account.apiSecret == null || account.apiPassphrase == null) {
+                        logger.debug("账户未配置 API 凭证，跳过更新: accountId=${account.id}")
+                        continue
+                    }
+                    
+                    // 解密 API 凭证
+                    val apiSecret = try {
+                        cryptoUtils.decrypt(account.apiSecret!!)
+                    } catch (e: Exception) {
+                        logger.warn("解密 API Secret 失败: accountId=${account.id}, error=${e.message}")
+                        continue
+                    }
+                    
+                    val apiPassphrase = try {
+                        cryptoUtils.decrypt(account.apiPassphrase!!)
+                    } catch (e: Exception) {
+                        logger.warn("解密 API Passphrase 失败: accountId=${account.id}, error=${e.message}")
+                        continue
+                    }
+                    
+                    // 创建带认证的 CLOB API 客户端
+                    val clobApi = retrofitFactory.createClobApi(
+                        account.apiKey!!,
+                        apiSecret,
+                        apiPassphrase,
+                        account.walletAddress
+                    )
+                    
+                    // 如果 orderId 不是 0x 开头，直接标记为已更新（不需要通过API查询）
+                    if (!record.sellOrderId.startsWith("0x", ignoreCase = true)) {
+                        logger.debug("卖出订单ID非0x开头，直接标记为已更新: orderId=${record.sellOrderId}")
+                        val updatedRecord = SellMatchRecord(
+                            id = record.id,
+                            copyTradingId = record.copyTradingId,
+                            sellOrderId = record.sellOrderId,
+                            leaderSellTradeId = record.leaderSellTradeId,
+                            marketId = record.marketId,
+                            side = record.side,
+                            outcomeIndex = record.outcomeIndex,
+                            totalMatchedQuantity = record.totalMatchedQuantity,
+                            sellPrice = record.sellPrice,
+                            totalRealizedPnl = record.totalRealizedPnl,
+                            priceUpdated = true,  // 标记为已更新
+                            createdAt = record.createdAt
+                        )
+                        sellMatchRecordRepository.save(updatedRecord)
+                        continue
+                    }
+                    
+                    // 查询订单详情，获取实际成交价
+                    val actualSellPrice = trackingService.getActualExecutionPrice(
+                        orderId = record.sellOrderId,
+                        clobApi = clobApi,
+                        fallbackPrice = record.sellPrice
+                    )
+                    
+                    // 如果价格已更新（与当前价格不同），更新数据库
+                    if (actualSellPrice != record.sellPrice) {
+                        // 重新计算盈亏
+                        val details = sellMatchDetailRepository.findByMatchRecordId(record.id!!)
+                        var totalRealizedPnl = BigDecimal.ZERO
+                        
+                        for (detail in details) {
+                            val updatedRealizedPnl = actualSellPrice.subtract(detail.buyPrice).multi(detail.matchedQuantity)
+                            
+                            // 更新明细的卖出价格和盈亏
+                            // 注意：SellMatchDetail 的字段都是 val，需要创建新对象
+                            val updatedDetail = SellMatchDetail(
+                                id = detail.id,
+                                matchRecordId = detail.matchRecordId,
+                                trackingId = detail.trackingId,
+                                buyOrderId = detail.buyOrderId,
+                                matchedQuantity = detail.matchedQuantity,
+                                buyPrice = detail.buyPrice,
+                                sellPrice = actualSellPrice,  // 更新卖出价格
+                                realizedPnl = updatedRealizedPnl,  // 更新盈亏
+                                createdAt = detail.createdAt
+                            )
+                            sellMatchDetailRepository.save(updatedDetail)
+                            
+                            totalRealizedPnl = totalRealizedPnl.add(updatedRealizedPnl)
+                        }
+                        
+                        // 更新卖出记录
+                        // 注意：SellMatchRecord 的字段都是 val，需要创建新对象
+                        val updatedRecord = SellMatchRecord(
+                            id = record.id,
+                            copyTradingId = record.copyTradingId,
+                            sellOrderId = record.sellOrderId,
+                            leaderSellTradeId = record.leaderSellTradeId,
+                            marketId = record.marketId,
+                            side = record.side,
+                            outcomeIndex = record.outcomeIndex,
+                            totalMatchedQuantity = record.totalMatchedQuantity,
+                            sellPrice = actualSellPrice,  // 更新卖出价格
+                            totalRealizedPnl = totalRealizedPnl,  // 更新总盈亏
+                            priceUpdated = true,  // 标记为已更新
+                            createdAt = record.createdAt
+                        )
+                        sellMatchRecordRepository.save(updatedRecord)
+                        
+                        logger.info("更新卖出订单价格成功: orderId=${record.sellOrderId}, 原价格=${record.sellPrice}, 新价格=$actualSellPrice")
+                    } else {
+                        // 价格相同，但可能已经查询过，标记为已更新
+                        val updatedRecord = SellMatchRecord(
+                            id = record.id,
+                            copyTradingId = record.copyTradingId,
+                            sellOrderId = record.sellOrderId,
+                            leaderSellTradeId = record.leaderSellTradeId,
+                            marketId = record.marketId,
+                            side = record.side,
+                            outcomeIndex = record.outcomeIndex,
+                            totalMatchedQuantity = record.totalMatchedQuantity,
+                            sellPrice = record.sellPrice,
+                            totalRealizedPnl = record.totalRealizedPnl,
+                            priceUpdated = true,  // 标记为已更新
+                            createdAt = record.createdAt
+                        )
+                        sellMatchRecordRepository.save(updatedRecord)
+                        logger.debug("卖出订单价格无需更新: orderId=${record.sellOrderId}, price=$actualSellPrice")
+                    }
+                } catch (e: Exception) {
+                    logger.warn("更新卖出订单价格失败: orderId=${record.sellOrderId}, error=${e.message}", e)
+                    // 继续处理下一条记录
+                }
+            }
+        } catch (e: Exception) {
+            logger.error("更新待更新卖出订单价格异常: ${e.message}", e)
+        }
+    }
+}
+
diff --git a/backend/src/main/resources/db/migration/V13__add_price_updated_to_sell_match_record.sql b/backend/src/main/resources/db/migration/V13__add_price_updated_to_sell_match_record.sql
new file mode 100644
index 0000000..c4084fa
--- /dev/null
+++ b/backend/src/main/resources/db/migration/V13__add_price_updated_to_sell_match_record.sql
@@ -0,0 +1,8 @@
+-- 添加 price_updated 字段到 sell_match_record 表
+-- 用于标记卖出价格是否已从订单详情中更新
+ALTER TABLE sell_match_record
+ADD COLUMN price_updated BOOLEAN DEFAULT FALSE COMMENT '价格是否已更新（从订单详情获取实际成交价）';
+
+-- 为已存在的记录设置默认值
+UPDATE sell_match_record SET price_updated = TRUE WHERE price_updated IS NULL;
+