diff --git a/backend_api_python/app/routes/strategy.py b/backend_api_python/app/routes/strategy.py
index 17d7df5..f1ae410 100644
--- a/backend_api_python/app/routes/strategy.py
+++ b/backend_api_python/app/routes/strategy.py
@@ -427,6 +427,11 @@ def get_positions():
                 pct = _calc_pnl_percent(entry, size, pnl)
 
                 rr = dict(r)
+                # 确保 entry_price 有值（如果数据库中是 NULL，使用计算出的 entry 值）
+                if not rr.get("entry_price") or float(rr.get("entry_price") or 0.0) <= 0:
+                    rr["entry_price"] = float(entry or 0.0)
+                else:
+                    rr["entry_price"] = float(rr.get("entry_price") or 0.0)
                 rr["current_price"] = float(cp or 0.0)
                 rr["unrealized_pnl"] = float(pnl)
                 rr["pnl_percent"] = float(pct)
diff --git a/backend_api_python/app/services/live_trading/binance.py b/backend_api_python/app/services/live_trading/binance.py
index 17618d7..b0496f6 100644
--- a/backend_api_python/app/services/live_trading/binance.py
+++ b/backend_api_python/app/services/live_trading/binance.py
@@ -47,11 +47,51 @@ class BinanceFuturesClient(BaseRestClient):
             return Decimal("0")
 
     @staticmethod
-    def _dec_str(d: Decimal) -> str:
+    def _dec_str(d: Decimal, max_decimals: int = 18) -> str:
+        """
+        Convert Decimal to string with controlled precision.
+        Binance requires quantities/prices to match LOT_SIZE/PRICE_FILTER precision.
+        This method ensures the output string doesn't exceed the required precision.
+        """
         try:
-            return format(d, "f")
+            if d == 0:
+                return "0"
+            # Normalize to remove unnecessary trailing zeros from internal representation
+            normalized = d.normalize()
+            # Convert to string using fixed-point notation
+            # Use a reasonable max_decimals to avoid excessive precision
+            # Binance typically uses 8 decimal places for most symbols
+            s = format(normalized, f".{max_decimals}f")
+            # Remove trailing zeros and decimal point if not needed
+            # This ensures we don't send "0.02874400" when "0.028744" is sufficient
+            if '.' in s:
+                s = s.rstrip('0').rstrip('.')
+            return s if s else "0"
         except Exception:
-            return str(d)
+            # Fallback: try to convert safely
+            try:
+                # If Decimal conversion fails, try float with limited precision
+                f = float(d)
+                if f == 0:
+                    return "0"
+                # Format with max_decimals and remove trailing zeros
+                s = format(f, f".{max_decimals}f")
+                if '.' in s:
+                    s = s.rstrip('0').rstrip('.')
+                return s if s else "0"
+            except Exception:
+                # Last resort: convert to string
+                s = str(d)
+                # Try to remove scientific notation if present
+                if 'e' in s.lower() or 'E' in s:
+                    try:
+                        f = float(s)
+                        s = format(f, f".{max_decimals}f")
+                        if '.' in s:
+                            s = s.rstrip('0').rstrip('.')
+                    except Exception:
+                        pass
+                return s if s else "0"
 
     @staticmethod
     def _floor_to_step(value: Decimal, step: Decimal) -> Decimal:
@@ -237,12 +277,34 @@ class BinanceFuturesClient(BaseRestClient):
 
         if step > 0:
             q = self._floor_to_step(q, step)
+        
         # Enforce quantity precision cap (Binance may reject quantities with too many decimals: -1111).
+        # First try to get precision from metadata
+        qty_precision = None
         try:
             meta = fdict.get("_meta") or {}
-            q = self._floor_to_precision(q, (meta.get("quantityPrecision") if isinstance(meta, dict) else None))
+            if isinstance(meta, dict):
+                qty_precision = meta.get("quantityPrecision")
         except Exception:
             pass
+        
+        # If precision not available, infer from stepSize
+        if qty_precision is None and step > 0:
+            try:
+                # stepSize like "0.001" means 3 decimal places
+                step_str = str(step).rstrip('0')
+                if '.' in step_str:
+                    qty_precision = len(step_str.split('.')[1])
+                else:
+                    # If stepSize is 1 or larger, precision is 0
+                    qty_precision = 0
+            except Exception:
+                pass
+        
+        # Apply precision limit
+        if qty_precision is not None:
+            q = self._floor_to_precision(q, qty_precision)
+        
         if min_qty > 0 and q < min_qty:
             return Decimal("0")
         return q
diff --git a/backend_api_python/app/services/live_trading/binance_spot.py b/backend_api_python/app/services/live_trading/binance_spot.py
index f8ab3e8..3eb2d30 100644
--- a/backend_api_python/app/services/live_trading/binance_spot.py
+++ b/backend_api_python/app/services/live_trading/binance_spot.py
@@ -38,11 +38,51 @@ class BinanceSpotClient(BaseRestClient):
             return Decimal("0")
 
     @staticmethod
-    def _dec_str(d: Decimal) -> str:
+    def _dec_str(d: Decimal, max_decimals: int = 18) -> str:
+        """
+        Convert Decimal to string with controlled precision.
+        Binance requires quantities/prices to match LOT_SIZE/PRICE_FILTER precision.
+        This method ensures the output string doesn't exceed the required precision.
+        """
         try:
-            return format(d, "f")
+            if d == 0:
+                return "0"
+            # Normalize to remove unnecessary trailing zeros from internal representation
+            normalized = d.normalize()
+            # Convert to string using fixed-point notation
+            # Use a reasonable max_decimals to avoid excessive precision
+            # Binance typically uses 8 decimal places for most symbols
+            s = format(normalized, f".{max_decimals}f")
+            # Remove trailing zeros and decimal point if not needed
+            # This ensures we don't send "0.02874400" when "0.028744" is sufficient
+            if '.' in s:
+                s = s.rstrip('0').rstrip('.')
+            return s if s else "0"
         except Exception:
-            return str(d)
+            # Fallback: try to convert safely
+            try:
+                # If Decimal conversion fails, try float with limited precision
+                f = float(d)
+                if f == 0:
+                    return "0"
+                # Format with max_decimals and remove trailing zeros
+                s = format(f, f".{max_decimals}f")
+                if '.' in s:
+                    s = s.rstrip('0').rstrip('.')
+                return s if s else "0"
+            except Exception:
+                # Last resort: convert to string
+                s = str(d)
+                # Try to remove scientific notation if present
+                if 'e' in s.lower() or 'E' in s:
+                    try:
+                        f = float(s)
+                        s = format(f, f".{max_decimals}f")
+                        if '.' in s:
+                            s = s.rstrip('0').rstrip('.')
+                    except Exception:
+                        pass
+                return s if s else "0"
 
     @staticmethod
     def _floor_to_step(value: Decimal, step: Decimal) -> Decimal:
@@ -217,12 +257,34 @@ class BinanceSpotClient(BaseRestClient):
 
         if step > 0:
             q = self._floor_to_step(q, step)
+        
         # Enforce quantity precision cap (Binance may reject quantities with too many decimals: -1111).
+        # First try to get precision from metadata
+        qty_precision = None
         try:
             meta = fdict.get("_meta") or {}
-            q = self._floor_to_precision(q, (meta.get("quantityPrecision") if isinstance(meta, dict) else None))
+            if isinstance(meta, dict):
+                qty_precision = meta.get("quantityPrecision")
         except Exception:
             pass
+        
+        # If precision not available, infer from stepSize
+        if qty_precision is None and step > 0:
+            try:
+                # stepSize like "0.001" means 3 decimal places
+                step_str = str(step).rstrip('0')
+                if '.' in step_str:
+                    qty_precision = len(step_str.split('.')[1])
+                else:
+                    # If stepSize is 1 or larger, precision is 0
+                    qty_precision = 0
+            except Exception:
+                pass
+        
+        # Apply precision limit
+        if qty_precision is not None:
+            q = self._floor_to_precision(q, qty_precision)
+        
         if min_qty > 0 and q < min_qty:
             return Decimal("0")
         return q
diff --git a/backend_api_python/app/services/live_trading/bitget.py b/backend_api_python/app/services/live_trading/bitget.py
index aa59fb7..862b8ed 100644
--- a/backend_api_python/app/services/live_trading/bitget.py
+++ b/backend_api_python/app/services/live_trading/bitget.py
@@ -54,11 +54,39 @@ class BitgetMixClient(BaseRestClient):
             return Decimal("0")
 
     @staticmethod
-    def _dec_str(d: Decimal) -> str:
+    def _dec_str(d: Decimal, max_decimals: int = 18) -> str:
+        """
+        Convert Decimal to string with controlled precision.
+        Bitget requires quantities to match sizeStep/sizePlace precision.
+        """
         try:
-            return format(d, "f")
+            if d == 0:
+                return "0"
+            normalized = d.normalize()
+            s = format(normalized, f".{max_decimals}f")
+            if '.' in s:
+                s = s.rstrip('0').rstrip('.')
+            return s if s else "0"
         except Exception:
-            return str(d)
+            try:
+                f = float(d)
+                if f == 0:
+                    return "0"
+                s = format(f, f".{max_decimals}f")
+                if '.' in s:
+                    s = s.rstrip('0').rstrip('.')
+                return s if s else "0"
+            except Exception:
+                s = str(d)
+                if 'e' in s.lower() or 'E' in s:
+                    try:
+                        f = float(s)
+                        s = format(f, f".{max_decimals}f")
+                        if '.' in s:
+                            s = s.rstrip('0').rstrip('.')
+                    except Exception:
+                        pass
+                return s if s else "0"
 
     @staticmethod
     def _floor_to_step(value: Decimal, step: Decimal) -> Decimal:
diff --git a/backend_api_python/app/services/live_trading/bitget_spot.py b/backend_api_python/app/services/live_trading/bitget_spot.py
index 1afac2d..e8b972f 100644
--- a/backend_api_python/app/services/live_trading/bitget_spot.py
+++ b/backend_api_python/app/services/live_trading/bitget_spot.py
@@ -54,11 +54,39 @@ class BitgetSpotClient(BaseRestClient):
             return Decimal("0")
 
     @staticmethod
-    def _dec_str(d: Decimal) -> str:
+    def _dec_str(d: Decimal, max_decimals: int = 18) -> str:
+        """
+        Convert Decimal to string with controlled precision.
+        Bitget requires quantities to match quantityStep/quantityScale precision.
+        """
         try:
-            return format(d, "f")
+            if d == 0:
+                return "0"
+            normalized = d.normalize()
+            s = format(normalized, f".{max_decimals}f")
+            if '.' in s:
+                s = s.rstrip('0').rstrip('.')
+            return s if s else "0"
         except Exception:
-            return str(d)
+            try:
+                f = float(d)
+                if f == 0:
+                    return "0"
+                s = format(f, f".{max_decimals}f")
+                if '.' in s:
+                    s = s.rstrip('0').rstrip('.')
+                return s if s else "0"
+            except Exception:
+                s = str(d)
+                if 'e' in s.lower() or 'E' in s:
+                    try:
+                        f = float(s)
+                        s = format(f, f".{max_decimals}f")
+                        if '.' in s:
+                            s = s.rstrip('0').rstrip('.')
+                    except Exception:
+                        pass
+                return s if s else "0"
 
     @staticmethod
     def _floor_to_step(value: Decimal, step: Decimal) -> Decimal:
diff --git a/backend_api_python/app/services/live_trading/bybit.py b/backend_api_python/app/services/live_trading/bybit.py
index 5a59d31..eb46072 100644
--- a/backend_api_python/app/services/live_trading/bybit.py
+++ b/backend_api_python/app/services/live_trading/bybit.py
@@ -61,11 +61,39 @@ class BybitClient(BaseRestClient):
             return Decimal("0")
 
     @staticmethod
-    def _dec_str(d: Decimal) -> str:
+    def _dec_str(d: Decimal, max_decimals: int = 18) -> str:
+        """
+        Convert Decimal to string with controlled precision.
+        Bybit requires quantities to match qtyStep precision.
+        """
         try:
-            return format(d, "f")
+            if d == 0:
+                return "0"
+            normalized = d.normalize()
+            s = format(normalized, f".{max_decimals}f")
+            if '.' in s:
+                s = s.rstrip('0').rstrip('.')
+            return s if s else "0"
         except Exception:
-            return str(d)
+            try:
+                f = float(d)
+                if f == 0:
+                    return "0"
+                s = format(f, f".{max_decimals}f")
+                if '.' in s:
+                    s = s.rstrip('0').rstrip('.')
+                return s if s else "0"
+            except Exception:
+                s = str(d)
+                if 'e' in s.lower() or 'E' in s:
+                    try:
+                        f = float(s)
+                        s = format(f, f".{max_decimals}f")
+                        if '.' in s:
+                            s = s.rstrip('0').rstrip('.')
+                    except Exception:
+                        pass
+                return s if s else "0"
 
     @staticmethod
     def _floor_to_step(value: Decimal, step: Decimal) -> Decimal:
diff --git a/backend_api_python/app/services/live_trading/deepcoin.py b/backend_api_python/app/services/live_trading/deepcoin.py
index e869e4d..761073d 100644
--- a/backend_api_python/app/services/live_trading/deepcoin.py
+++ b/backend_api_python/app/services/live_trading/deepcoin.py
@@ -74,11 +74,39 @@ class DeepcoinClient(BaseRestClient):
             return Decimal("0")
 
     @staticmethod
-    def _dec_str(d: Decimal) -> str:
+    def _dec_str(d: Decimal, max_decimals: int = 18) -> str:
+        """
+        Convert Decimal to string with controlled precision.
+        Deepcoin requires quantities to match lotSz/qtyStep precision.
+        """
         try:
-            return format(d, "f")
+            if d == 0:
+                return "0"
+            normalized = d.normalize()
+            s = format(normalized, f".{max_decimals}f")
+            if '.' in s:
+                s = s.rstrip('0').rstrip('.')
+            return s if s else "0"
         except Exception:
-            return str(d)
+            try:
+                f = float(d)
+                if f == 0:
+                    return "0"
+                s = format(f, f".{max_decimals}f")
+                if '.' in s:
+                    s = s.rstrip('0').rstrip('.')
+                return s if s else "0"
+            except Exception:
+                s = str(d)
+                if 'e' in s.lower() or 'E' in s:
+                    try:
+                        f = float(s)
+                        s = format(f, f".{max_decimals}f")
+                        if '.' in s:
+                            s = s.rstrip('0').rstrip('.')
+                    except Exception:
+                        pass
+                return s if s else "0"
 
     @staticmethod
     def _floor_to_step(value: Decimal, step: Decimal) -> Decimal:
diff --git a/backend_api_python/app/services/live_trading/okx.py b/backend_api_python/app/services/live_trading/okx.py
index 84d16e3..abbb830 100644
--- a/backend_api_python/app/services/live_trading/okx.py
+++ b/backend_api_python/app/services/live_trading/okx.py
@@ -52,14 +52,41 @@ class OkxClient(BaseRestClient):
         self._lev_cache_ttl_sec = 60.0
 
     @staticmethod
-    def _dec_str(d: Decimal) -> str:
+    def _dec_str(d: Decimal, max_decimals: int = 18) -> str:
         """
-        Convert Decimal to a non-scientific string (OKX expects plain decimal strings).
+        Convert Decimal to a non-scientific string with controlled precision.
+        OKX expects plain decimal strings matching lotSz precision.
         """
         try:
-            return format(d, "f")
+            if d == 0:
+                return "0"
+            # Normalize to remove unnecessary trailing zeros
+            normalized = d.normalize()
+            # Format with max_decimals and remove trailing zeros
+            s = format(normalized, f".{max_decimals}f")
+            if '.' in s:
+                s = s.rstrip('0').rstrip('.')
+            return s if s else "0"
         except Exception:
-            return str(d)
+            try:
+                f = float(d)
+                if f == 0:
+                    return "0"
+                s = format(f, f".{max_decimals}f")
+                if '.' in s:
+                    s = s.rstrip('0').rstrip('.')
+                return s if s else "0"
+            except Exception:
+                s = str(d)
+                if 'e' in s.lower() or 'E' in s:
+                    try:
+                        f = float(s)
+                        s = format(f, f".{max_decimals}f")
+                        if '.' in s:
+                            s = s.rstrip('0').rstrip('.')
+                    except Exception:
+                        pass
+                return s if s else "0"
 
     @staticmethod
     def _to_dec(x: Any) -> Decimal:
diff --git a/backend_api_python/app/services/strategy.py b/backend_api_python/app/services/strategy.py
index 6c59d50..8172f8f 100644
--- a/backend_api_python/app/services/strategy.py
+++ b/backend_api_python/app/services/strategy.py
@@ -559,6 +559,21 @@ class StrategyService:
         initial_capital = (trading_config or {}).get('initial_capital') or payload.get('initial_capital') or 1000
         leverage = (trading_config or {}).get('leverage') or 1
         market_type = (trading_config or {}).get('market_type') or 'swap'
+        
+        # Cross-sectional strategy fields (store in trading_config to avoid DB schema changes)
+        cs_strategy_type = payload.get('cs_strategy_type') or trading_config.get('cs_strategy_type') or 'single'
+        symbol_list = payload.get('symbol_list') or trading_config.get('symbol_list') or []
+        portfolio_size = payload.get('portfolio_size') or trading_config.get('portfolio_size') or 10
+        long_ratio = float(payload.get('long_ratio') or trading_config.get('long_ratio') or 0.5)
+        rebalance_frequency = payload.get('rebalance_frequency') or trading_config.get('rebalance_frequency') or 'daily'
+        
+        # Store cross-sectional config in trading_config
+        if cs_strategy_type == 'cross_sectional':
+            trading_config['cs_strategy_type'] = cs_strategy_type
+            trading_config['symbol_list'] = symbol_list
+            trading_config['portfolio_size'] = portfolio_size
+            trading_config['long_ratio'] = long_ratio
+            trading_config['rebalance_frequency'] = rebalance_frequency
 
         with get_db_connection() as db:
             cur = db.cursor()
@@ -764,6 +779,18 @@ class StrategyService:
         trading_config = payload.get('trading_config') if payload.get('trading_config') is not None else (existing.get('trading_config') or {})
         exchange_config = payload.get('exchange_config') if payload.get('exchange_config') is not None else (existing.get('exchange_config') or {})
         ai_model_config = payload.get('ai_model_config') if payload.get('ai_model_config') is not None else (existing.get('ai_model_config') or {})
+        
+        # Handle cross-sectional strategy config updates
+        if payload.get('cs_strategy_type') is not None:
+            trading_config['cs_strategy_type'] = payload.get('cs_strategy_type')
+        if payload.get('symbol_list') is not None:
+            trading_config['symbol_list'] = payload.get('symbol_list')
+        if payload.get('portfolio_size') is not None:
+            trading_config['portfolio_size'] = payload.get('portfolio_size')
+        if payload.get('long_ratio') is not None:
+            trading_config['long_ratio'] = payload.get('long_ratio')
+        if payload.get('rebalance_frequency') is not None:
+            trading_config['rebalance_frequency'] = payload.get('rebalance_frequency')
 
         symbol = (trading_config or {}).get('symbol')
         timeframe = (trading_config or {}).get('timeframe')
diff --git a/backend_api_python/app/services/trading_executor.py b/backend_api_python/app/services/trading_executor.py
index 77b9f03..0258de0 100644
--- a/backend_api_python/app/services/trading_executor.py
+++ b/backend_api_python/app/services/trading_executor.py
@@ -561,6 +561,18 @@ class TradingExecutor:
             market_category = (strategy.get('market_category') or 'Crypto').strip()
             logger.info(f"Strategy {strategy_id} market_category: {market_category}")
 
+            # Check if this is a cross-sectional strategy
+            cs_strategy_type = trading_config.get('cs_strategy_type', 'single')
+            if cs_strategy_type == 'cross_sectional':
+                # Run cross-sectional strategy loop
+                self._run_cross_sectional_strategy_loop(
+                    strategy_id, strategy, trading_config, indicator_config, 
+                    ai_model_config, execution_mode, notification_config, 
+                    strategy_name, market_category, market_type, leverage, 
+                    initial_capital, indicator_code, indicator_id
+                )
+                return
+
             # 初始化交易所连接（信号模式下无需真实连接）
             exchange = None
             
@@ -2687,3 +2699,348 @@ class TradingExecutor:
                 return result['code'] if result else None
         except:
             return None
+    
+    def _get_all_positions(self, strategy_id: int) -> List[Dict[str, Any]]:
+        """获取策略的所有持仓（截面策略使用）"""
+        try:
+            with get_db_connection() as db:
+                cursor = db.cursor()
+                cursor.execute("""
+                    SELECT id, symbol, side, size, entry_price, current_price, highest_price, lowest_price
+                    FROM qd_strategy_positions
+                    WHERE strategy_id = %s
+                """, (strategy_id,))
+                return cursor.fetchall() or []
+        except Exception as e:
+            logger.error(f"Failed to get all positions: {e}")
+            return []
+    
+    def _should_rebalance(self, strategy_id: int, rebalance_frequency: str) -> bool:
+        """检查是否应该调仓"""
+        try:
+            with get_db_connection() as db:
+                cursor = db.cursor()
+                cursor.execute("""
+                    SELECT last_rebalance_at FROM qd_strategies_trading WHERE id = %s
+                """, (strategy_id,))
+                result = cursor.fetchone()
+                if not result or not result.get('last_rebalance_at'):
+                    return True
+                
+                last_rebalance = result['last_rebalance_at']
+                if isinstance(last_rebalance, str):
+                    from datetime import datetime
+                    last_rebalance = datetime.fromisoformat(last_rebalance.replace('Z', '+00:00'))
+                
+                now = datetime.now()
+                delta = now - last_rebalance
+                
+                if rebalance_frequency == 'daily':
+                    return delta.days >= 1
+                elif rebalance_frequency == 'weekly':
+                    return delta.days >= 7
+                elif rebalance_frequency == 'monthly':
+                    return delta.days >= 30
+                return True
+        except Exception as e:
+            logger.error(f"Failed to check rebalance: {e}")
+            return True
+    
+    def _update_last_rebalance(self, strategy_id: int):
+        """更新上次调仓时间"""
+        try:
+            with get_db_connection() as db:
+                cursor = db.cursor()
+                # Try to update, if column doesn't exist, ignore
+                try:
+                    cursor.execute("""
+                        UPDATE qd_strategies_trading 
+                        SET last_rebalance_at = NOW() 
+                        WHERE id = %s
+                    """, (strategy_id,))
+                    db.commit()
+                except Exception:
+                    # Column may not exist, that's OK
+                    pass
+                cursor.close()
+        except Exception as e:
+            logger.warning(f"Failed to update last_rebalance_at: {e}")
+    
+    def _execute_cross_sectional_indicator(
+        self,
+        indicator_code: str,
+        symbols: List[str],
+        trading_config: Dict[str, Any],
+        market_category: str,
+        timeframe: str
+    ) -> Optional[Dict[str, Any]]:
+        """
+        执行截面策略指标，返回所有标的的评分和排序
+        """
+        try:
+            # 获取所有标的的K线数据
+            all_data = {}
+            for symbol in symbols:
+                try:
+                    klines = self._fetch_latest_kline(symbol, timeframe, limit=200, market_category=market_category)
+                    if klines and len(klines) >= 2:
+                        df = self._klines_to_dataframe(klines)
+                        if len(df) > 0:
+                            all_data[symbol] = df
+                except Exception as e:
+                    logger.warning(f"Failed to fetch data for {symbol}: {e}")
+                    continue
+            
+            if not all_data:
+                logger.error("No data available for cross-sectional strategy")
+                return None
+            
+            # 准备执行环境
+            exec_env = {
+                'symbols': list(all_data.keys()),
+                'data': all_data,  # {symbol: df}
+                'scores': {},  # 用于存储评分
+                'rankings': [],  # 用于存储排序
+                'np': np,
+                'pd': pd,
+                'trading_config': trading_config,
+                'config': trading_config,
+            }
+            
+            # 执行指标代码
+            import builtins
+            safe_builtins = {k: getattr(builtins, k) for k in dir(builtins) 
+                           if not k.startswith('_') and k not in [
+                               'eval', 'exec', 'compile', 'open', 'input',
+                               'help', 'exit', 'quit', '__import__',
+                           ]}
+            exec_env['__builtins__'] = safe_builtins
+            
+            pre_import_code = "import numpy as np\nimport pandas as pd\n"
+            exec(pre_import_code, exec_env)
+            exec(indicator_code, exec_env)
+            
+            scores = exec_env.get('scores', {})
+            rankings = exec_env.get('rankings', [])
+            
+            # 如果没有提供rankings，根据scores排序
+            if not rankings and scores:
+                rankings = sorted(scores.keys(), key=lambda x: scores.get(x, 0), reverse=True)
+            
+            return {
+                'scores': scores,
+                'rankings': rankings
+            }
+        except Exception as e:
+            logger.error(f"Failed to execute cross-sectional indicator: {e}")
+            logger.error(traceback.format_exc())
+            return None
+    
+    def _generate_cross_sectional_signals(
+        self,
+        strategy_id: int,
+        rankings: List[str],
+        scores: Dict[str, float],
+        trading_config: Dict[str, Any]
+    ) -> List[Dict[str, Any]]:
+        """
+        根据排序结果生成截面策略信号
+        """
+        portfolio_size = trading_config.get('portfolio_size', 10)
+        long_ratio = float(trading_config.get('long_ratio', 0.5))
+        
+        # 选择持仓标的
+        long_count = int(portfolio_size * long_ratio)
+        short_count = portfolio_size - long_count
+        
+        long_symbols = set(rankings[:long_count]) if long_count > 0 else set()
+        short_symbols = set(rankings[-short_count:]) if short_count > 0 and len(rankings) >= short_count else set()
+        
+        # 获取当前持仓
+        current_positions = self._get_all_positions(strategy_id)
+        current_long = {p['symbol'] for p in current_positions if p.get('side') == 'long'}
+        current_short = {p['symbol'] for p in current_positions if p.get('side') == 'short'}
+        
+        signals = []
+        
+        # 生成做多信号
+        for symbol in long_symbols:
+            if symbol not in current_long:
+                # 如果当前没有多仓，开多
+                if symbol in current_short:
+                    # 如果当前是空仓，先平空再开多
+                    signals.append({
+                        'symbol': symbol,
+                        'type': 'close_short',
+                        'score': scores.get(symbol, 0)
+                    })
+                signals.append({
+                    'symbol': symbol,
+                    'type': 'open_long',
+                    'score': scores.get(symbol, 0)
+                })
+        
+        # 平掉不在做多列表中的多仓
+        for symbol in current_long:
+            if symbol not in long_symbols:
+                signals.append({
+                    'symbol': symbol,
+                    'type': 'close_long',
+                    'score': scores.get(symbol, 0)
+                })
+        
+        # 生成做空信号
+        for symbol in short_symbols:
+            if symbol not in current_short:
+                # 如果当前没有空仓，开空
+                if symbol in current_long:
+                    # 如果当前是多仓，先平多再开空
+                    signals.append({
+                        'symbol': symbol,
+                        'type': 'close_long',
+                        'score': scores.get(symbol, 0)
+                    })
+                signals.append({
+                    'symbol': symbol,
+                    'type': 'open_short',
+                    'score': scores.get(symbol, 0)
+                })
+        
+        # 平掉不在做空列表中的空仓
+        for symbol in current_short:
+            if symbol not in short_symbols:
+                signals.append({
+                    'symbol': symbol,
+                    'type': 'close_short',
+                    'score': scores.get(symbol, 0)
+                })
+        
+        return signals
+    
+    def _run_cross_sectional_strategy_loop(
+        self,
+        strategy_id: int,
+        strategy: Dict[str, Any],
+        trading_config: Dict[str, Any],
+        indicator_config: Dict[str, Any],
+        ai_model_config: Dict[str, Any],
+        execution_mode: str,
+        notification_config: Dict[str, Any],
+        strategy_name: str,
+        market_category: str,
+        market_type: str,
+        leverage: float,
+        initial_capital: float,
+        indicator_code: str,
+        indicator_id: Optional[int]
+    ):
+        """
+        截面策略执行循环
+        """
+        logger.info(f"Starting cross-sectional strategy loop for strategy {strategy_id}")
+        
+        symbol_list = trading_config.get('symbol_list', [])
+        if not symbol_list:
+            logger.error(f"Strategy {strategy_id} has no symbol_list for cross-sectional strategy")
+            return
+        
+        timeframe = trading_config.get('timeframe', '1H')
+        rebalance_frequency = trading_config.get('rebalance_frequency', 'daily')
+        tick_interval_sec = int(trading_config.get('decide_interval', 300))
+        
+        last_tick_time = 0
+        last_rebalance_time = 0
+        
+        while True:
+            try:
+                # 检查策略状态
+                if not self._is_strategy_running(strategy_id):
+                    logger.info(f"Cross-sectional strategy {strategy_id} stopped")
+                    break
+                
+                current_time = time.time()
+                
+                # Sleep until next tick
+                if last_tick_time > 0:
+                    sleep_sec = (last_tick_time + tick_interval_sec) - current_time
+                    if sleep_sec > 0:
+                        time.sleep(min(sleep_sec, 1.0))
+                        continue
+                last_tick_time = current_time
+                
+                # 检查是否需要调仓
+                if not self._should_rebalance(strategy_id, rebalance_frequency):
+                    continue
+                
+                logger.info(f"Cross-sectional strategy {strategy_id} rebalancing...")
+                
+                # 执行截面指标
+                result = self._execute_cross_sectional_indicator(
+                    indicator_code, symbol_list, trading_config, market_category, timeframe
+                )
+                
+                if not result:
+                    logger.warning(f"Cross-sectional indicator returned no result")
+                    continue
+                
+                # 生成信号
+                signals = self._generate_cross_sectional_signals(
+                    strategy_id, result['rankings'], result['scores'], trading_config
+                )
+                
+                if not signals:
+                    logger.info(f"No rebalancing needed for strategy {strategy_id}")
+                    self._update_last_rebalance(strategy_id)
+                    continue
+                
+                logger.info(f"Generated {len(signals)} signals for cross-sectional strategy {strategy_id}")
+                
+                # 批量执行交易
+                from concurrent.futures import ThreadPoolExecutor, as_completed
+                with ThreadPoolExecutor(max_workers=min(10, len(signals))) as executor:
+                    futures = {}
+                    for signal in signals:
+                        future = executor.submit(
+                            self._execute_signal,
+                            strategy_id=strategy_id,
+                            strategy_name=strategy_name,
+                            exchange=None,  # Signal mode
+                            symbol=signal['symbol'],
+                            current_price=0.0,  # Will be fetched in _execute_signal
+                            signal_type=signal['type'],
+                            position_size=None,
+                            current_positions=[],
+                            trade_direction='both',
+                            leverage=leverage,
+                            initial_capital=initial_capital,
+                            market_type=market_type,
+                            market_category=market_category,
+                            margin_mode='cross',
+                            stop_loss_price=None,
+                            take_profit_price=None,
+                            execution_mode=execution_mode,
+                            notification_config=notification_config,
+                            trading_config=trading_config,
+                            ai_model_config=ai_model_config,
+                            signal_ts=int(current_time)
+                        )
+                        futures[future] = signal
+                    
+                    # 等待所有交易完成
+                    for future in as_completed(futures):
+                        signal = futures[future]
+                        try:
+                            result = future.result(timeout=30)
+                            if result:
+                                logger.info(f"Successfully executed signal: {signal['symbol']} {signal['type']}")
+                        except Exception as e:
+                            logger.error(f"Failed to execute signal {signal['symbol']} {signal['type']}: {e}")
+                
+                # 更新调仓时间
+                self._update_last_rebalance(strategy_id)
+                last_rebalance_time = current_time
+                
+            except Exception as e:
+                logger.error(f"Cross-sectional strategy loop error: {e}")
+                logger.error(traceback.format_exc())
+                time.sleep(5)  # Wait before retrying
\ No newline at end of file
diff --git a/backend_api_python/migrations/init.sql b/backend_api_python/migrations/init.sql
index 7562e93..6c1f96f 100644
--- a/backend_api_python/migrations/init.sql
+++ b/backend_api_python/migrations/init.sql
@@ -162,6 +162,18 @@ CREATE INDEX IF NOT EXISTS idx_strategies_user_id ON qd_strategies_trading(user_
 CREATE INDEX IF NOT EXISTS idx_strategies_status ON qd_strategies_trading(status);
 CREATE INDEX IF NOT EXISTS idx_strategies_group_id ON qd_strategies_trading(strategy_group_id);
 
+-- Add last_rebalance_at column for cross-sectional strategies (if not exists)
+DO $$
+BEGIN
+    IF NOT EXISTS (
+        SELECT 1 FROM information_schema.columns 
+        WHERE table_name = 'qd_strategies_trading' AND column_name = 'last_rebalance_at'
+    ) THEN
+        ALTER TABLE qd_strategies_trading ADD COLUMN last_rebalance_at TIMESTAMP;
+        RAISE NOTICE 'Added last_rebalance_at column to qd_strategies_trading';
+    END IF;
+END $$;
+
 -- =============================================================================
 -- 3. Strategy Positions
 -- =============================================================================
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 46121dd..f88f142 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -4,6 +4,79 @@ This document records version updates, new features, bug fixes, and database mig
 
 ---
 
+## V2.1.3 (2026-02-XX)
+
+### 🚀 New Features
+
+#### Cross-Sectional Strategy Support
+- **Multi-Symbol Portfolio Management** - Added support for cross-sectional strategies that manage a portfolio of multiple symbols simultaneously
+  - Strategy type selection: Single Symbol vs Cross-Sectional
+  - Symbol list configuration: Select multiple symbols for portfolio management
+  - Portfolio size: Configure the number of symbols to hold simultaneously
+  - Long/Short ratio: Set the proportion of long vs short positions (0-1)
+  - Rebalance frequency: Daily, Weekly, or Monthly portfolio rebalancing
+  - Indicator execution: Indicators receive a `data` dictionary (symbol -> DataFrame) for cross-symbol analysis
+  - Signal generation: Automatic buy/sell/close signals based on indicator rankings
+  - Parallel execution: Multiple orders executed concurrently for efficiency
+- **Backend Implementation**
+  - Cross-sectional configurations stored in `trading_config` JSON field
+  - New `_run_cross_sectional_strategy_loop` method in TradingExecutor
+  - Automatic rebalancing based on configured frequency
+  - Support for both long and short positions in the same portfolio
+- **Frontend UI**
+  - Strategy type selector in strategy creation/editing form
+  - Conditional display of single-symbol vs cross-sectional configuration fields
+  - Multi-select symbol picker for cross-sectional strategies
+  - Full i18n support (Chinese and English)
+
+See `docs/CROSS_SECTIONAL_STRATEGY_GUIDE_CN.md` or `docs/CROSS_SECTIONAL_STRATEGY_GUIDE_EN.md` for detailed usage instructions.
+
+### 🐛 Bug Fixes
+- Fixed decimal precision issues in exchange order quantities (Binance Spot LOT_SIZE filter errors)
+- Improved `_dec_str` method across all exchange clients for accurate quantity formatting
+- Enhanced quantity normalization to respect exchange precision requirements
+- Fixed validation logic for cross-sectional strategies (now validates correct symbol list field)
+- Fixed success message to show correct strategy count for cross-sectional strategies
+
+### 📋 Database Migration
+
+**Run the following SQL on your PostgreSQL database before deploying V2.1.3:**
+
+```sql
+-- ============================================================
+-- QuantDinger V2.1.3 Database Migration
+-- Cross-Sectional Strategy Support
+-- ============================================================
+
+-- Add last_rebalance_at column to track rebalancing time for cross-sectional strategies
+-- Note: Cross-sectional strategy configurations (symbol_list, portfolio_size, long_ratio, rebalance_frequency)
+-- are stored in the trading_config JSON field, not as separate database columns.
+-- This migration only adds the last_rebalance_at timestamp field which is needed for rebalancing logic.
+
+DO $$ 
+BEGIN
+    IF NOT EXISTS (
+        SELECT 1 FROM information_schema.columns 
+        WHERE table_name = 'qd_strategies_trading' 
+        AND column_name = 'last_rebalance_at'
+    ) THEN
+        ALTER TABLE qd_strategies_trading 
+        ADD COLUMN last_rebalance_at TIMESTAMP;
+        RAISE NOTICE 'Added last_rebalance_at column to qd_strategies_trading';
+    ELSE
+        RAISE NOTICE 'Column last_rebalance_at already exists';
+    END IF;
+END $$;
+```
+
+**Migration Notes:**
+- This migration is safe to run multiple times (uses IF NOT EXISTS check)
+- Cross-sectional strategy configurations are stored in the `trading_config` JSON field, so no additional columns are needed
+- The `last_rebalance_at` field is used to track when the last rebalancing occurred for cross-sectional strategies
+- If you don't run this migration, cross-sectional strategies will still work, but rebalancing frequency checks may not function correctly
+
+---
+
 ## V2.1.2 (2026-02-01)
 
 ### 🚀 New Features
diff --git a/docs/CROSS_SECTIONAL_STRATEGY_GUIDE_CN.md b/docs/CROSS_SECTIONAL_STRATEGY_GUIDE_CN.md
new file mode 100644
index 0000000..dc7acfc
--- /dev/null
+++ b/docs/CROSS_SECTIONAL_STRATEGY_GUIDE_CN.md
@@ -0,0 +1,223 @@
+# 截面策略使用指南
+
+## 概述
+
+截面策略（Cross-Sectional Strategy）是一种同时交易多个标的的策略类型。它根据某些因子对所有标的进行评分和排序，然后做多排名靠前的标的，做空排名靠后的标的。
+
+## 功能特点
+
+1. **多标的支持**：可以同时交易多个标的（股票、币种等）
+2. **自动排序**：根据指标计算的评分自动排序标的
+3. **组合管理**：自动管理持仓组合，保持做多/做空比例
+4. **定期调仓**：支持每日/每周/每月调仓频率
+5. **批量执行**：并行执行多个标的的交易，提高效率
+
+## 配置说明
+
+### 策略配置参数
+
+在创建或编辑策略时，需要在 `trading_config` 中添加以下参数：
+
+```json
+{
+  "cs_strategy_type": "cross_sectional",  // 策略类型：'single' 或 'cross_sectional'
+  "symbol_list": [                        // 标的列表
+    "Crypto:BTC/USDT",
+    "Crypto:ETH/USDT",
+    "Crypto:BNB/USDT"
+  ],
+  "portfolio_size": 10,                   // 持仓组合大小（做多+做空的总数）
+  "long_ratio": 0.5,                     // 做多比例（0-1之间，0.5表示50%做多，50%做空）
+  "rebalance_frequency": "daily"          // 调仓频率：'daily' | 'weekly' | 'monthly'
+}
+```
+
+### 参数说明
+
+- **cs_strategy_type**: 
+  - `'single'`: 单标的策略（默认，原有功能）
+  - `'cross_sectional'`: 截面策略
+
+- **symbol_list**: 
+  - 标的列表，格式为 `["Market:SYMBOL", ...]`
+  - 例如：`["Crypto:BTC/USDT", "Crypto:ETH/USDT"]`
+
+- **portfolio_size**: 
+  - 持仓组合大小，即同时持有的标的数量
+  - 例如：10 表示同时持有10个标的
+
+- **long_ratio**: 
+  - 做多比例，0-1之间的浮点数
+  - 例如：0.5 表示50%做多，50%做空
+  - 例如：1.0 表示100%做多（不做空）
+
+- **rebalance_frequency**: 
+  - 调仓频率
+  - `'daily'`: 每日调仓
+  - `'weekly'`: 每周调仓
+  - `'monthly'`: 每月调仓
+
+## 指标代码编写
+
+截面策略的指标代码需要返回所有标的的评分和排序。
+
+### 指标代码模板
+
+```python
+# 截面策略指标模板
+# 输入：data = {symbol1: df1, symbol2: df2, ...}
+# 输出：scores = {symbol1: score1, symbol2: score2, ...}
+#       rankings = [symbol1, symbol2, ...]  # 可选，如果不提供会根据scores自动排序
+
+scores = {}
+for symbol, df in data.items():
+    # 计算每个标的的因子值
+    # 例如：动量因子
+    momentum = (df['close'].iloc[-1] / df['close'].iloc[-20] - 1) * 100
+    
+    # 例如：RSI指标
+    def calculate_rsi(prices, period=14):
+        delta = prices.diff()
+        gain = (delta.where(delta > 0, 0)).rolling(window=period).mean()
+        loss = (-delta.where(delta < 0, 0)).rolling(window=period).mean()
+        rs = gain / loss
+        rsi = 100 - (100 / (1 + rs))
+        return rsi.iloc[-1]
+    
+    rsi = calculate_rsi(df['close'], 14)
+    
+    # 综合评分（可以根据需要调整权重）
+    score = momentum * 0.6 + (100 - rsi) * 0.4
+    scores[symbol] = score
+
+# 可选：手动指定排序（如果不提供，系统会根据scores自动排序）
+# rankings = sorted(scores.keys(), key=lambda x: scores[x], reverse=True)
+```
+
+### 指标代码环境变量
+
+在指标代码执行时，可以使用以下变量：
+
+- `symbols`: 标的列表 `['Crypto:BTC/USDT', 'Crypto:ETH/USDT', ...]`
+- `data`: 所有标的的K线数据 `{symbol: df, ...}`
+- `scores`: 用于存储评分的字典（需要在代码中填充）
+- `rankings`: 用于存储排序的列表（可选，如果不提供会根据scores自动排序）
+- `np`: numpy
+- `pd`: pandas
+- `trading_config`: 交易配置
+- `config`: 交易配置（别名）
+
+### 输出要求
+
+指标代码需要填充 `scores` 字典：
+
+```python
+scores[symbol] = score_value  # score_value 可以是任意数值
+```
+
+可选：填充 `rankings` 列表（如果不提供，系统会根据scores自动排序）：
+
+```python
+rankings = [symbol1, symbol2, ...]  # 按评分从高到低排序
+```
+
+## 信号生成逻辑
+
+系统会根据以下逻辑自动生成交易信号：
+
+1. **排序标的**：根据指标计算的评分对所有标的进行排序
+2. **选择持仓**：
+   - 排名靠前的 `portfolio_size * long_ratio` 个标的 → 做多
+   - 排名靠后的 `portfolio_size * (1 - long_ratio)` 个标的 → 做空
+3. **生成信号**：
+   - 新增标的：如果标的不在当前持仓中，生成开仓信号
+   - 移除标的：如果标的不在目标持仓中，生成平仓信号
+   - 方向变更：如果标的需要从多转空或从空转多，先生成平仓信号，再生成开仓信号
+
+## 使用示例
+
+### 1. 创建截面策略
+
+通过API创建策略时，在请求体中包含：
+
+```json
+{
+  "strategy_name": "动量截面策略",
+  "trading_config": {
+    "cs_strategy_type": "cross_sectional",
+    "symbol_list": [
+      "Crypto:BTC/USDT",
+      "Crypto:ETH/USDT",
+      "Crypto:BNB/USDT",
+      "Crypto:ADA/USDT",
+      "Crypto:SOL/USDT"
+    ],
+    "portfolio_size": 5,
+    "long_ratio": 0.6,
+    "rebalance_frequency": "daily",
+    "timeframe": "1H",
+    "initial_capital": 10000,
+    "leverage": 1,
+    "market_type": "swap"
+  },
+  "indicator_config": {
+    "indicator_id": 123,
+    "indicator_code": "..."
+  }
+}
+```
+
+### 2. 指标代码示例
+
+```python
+# 动量+RSI综合评分
+scores = {}
+for symbol, df in data.items():
+    # 20周期动量
+    momentum = (df['close'].iloc[-1] / df['close'].iloc[-20] - 1) * 100
+    
+    # RSI
+    delta = df['close'].diff()
+    gain = (delta.where(delta > 0, 0)).rolling(window=14).mean()
+    loss = (-delta.where(delta < 0, 0)).rolling(window=14).mean()
+    rs = gain / loss
+    rsi = 100 - (100 / (1 + rs))
+    rsi_value = rsi.iloc[-1]
+    
+    # 综合评分
+    score = momentum * 0.7 + (100 - rsi_value) * 0.3
+    scores[symbol] = score
+```
+
+## 注意事项
+
+1. **数据获取**：系统会为每个标的获取K线数据，如果某个标的数据获取失败，会跳过该标的
+2. **调仓频率**：系统会根据 `rebalance_frequency` 设置检查是否需要调仓，未到调仓时间时不会执行交易
+3. **批量执行**：所有交易信号会并行执行，最多同时执行10个交易
+4. **持仓管理**：系统会自动管理持仓，确保持仓组合符合配置要求
+5. **兼容性**：截面策略功能不影响现有的单标的策略，两者可以共存
+
+## 数据库迁移
+
+如果需要使用数据库字段存储截面策略配置（可选），可以运行迁移脚本：
+
+```sql
+-- 运行 migrations/add_cross_sectional_strategy.sql
+```
+
+如果不运行迁移脚本，截面策略配置会存储在 `trading_config` JSON字段中，功能完全正常。
+
+## 故障排查
+
+1. **策略不执行**：
+   - 检查 `cs_strategy_type` 是否为 `'cross_sectional'`
+   - 检查 `symbol_list` 是否不为空
+   - 检查调仓频率是否已到时间
+
+2. **指标执行失败**：
+   - 检查指标代码是否正确填充 `scores` 字典
+   - 检查所有标的的数据是否都能正常获取
+
+3. **信号不生成**：
+   - 检查 `portfolio_size` 是否小于等于 `symbol_list` 的长度
+   - 检查评分是否有效
diff --git a/docs/CROSS_SECTIONAL_STRATEGY_GUIDE_EN.md b/docs/CROSS_SECTIONAL_STRATEGY_GUIDE_EN.md
new file mode 100644
index 0000000..e735cfc
--- /dev/null
+++ b/docs/CROSS_SECTIONAL_STRATEGY_GUIDE_EN.md
@@ -0,0 +1,223 @@
+# Cross-Sectional Strategy Guide
+
+## Overview
+
+Cross-Sectional Strategy is a strategy type that trades multiple symbols simultaneously. It scores and ranks all symbols based on certain factors, then goes long on top-ranked symbols and short on bottom-ranked symbols.
+
+## Features
+
+1. **Multi-Symbol Support**: Can trade multiple symbols (stocks, cryptocurrencies, etc.) simultaneously
+2. **Automatic Ranking**: Automatically ranks symbols based on indicator-calculated scores
+3. **Portfolio Management**: Automatically manages portfolio positions, maintaining long/short ratios
+4. **Periodic Rebalancing**: Supports daily/weekly/monthly rebalancing frequencies
+5. **Batch Execution**: Executes trades for multiple symbols in parallel for improved efficiency
+
+## Configuration
+
+### Strategy Configuration Parameters
+
+When creating or editing a strategy, add the following parameters to `trading_config`:
+
+```json
+{
+  "cs_strategy_type": "cross_sectional",  // Strategy type: 'single' or 'cross_sectional'
+  "symbol_list": [                        // Symbol list
+    "Crypto:BTC/USDT",
+    "Crypto:ETH/USDT",
+    "Crypto:BNB/USDT"
+  ],
+  "portfolio_size": 10,                   // Portfolio size (total of long + short positions)
+  "long_ratio": 0.5,                     // Long ratio (0-1, 0.5 means 50% long, 50% short)
+  "rebalance_frequency": "daily"          // Rebalancing frequency: 'daily' | 'weekly' | 'monthly'
+}
+```
+
+### Parameter Description
+
+- **cs_strategy_type**: 
+  - `'single'`: Single-symbol strategy (default, original functionality)
+  - `'cross_sectional'`: Cross-sectional strategy
+
+- **symbol_list**: 
+  - List of symbols, format: `["Market:SYMBOL", ...]`
+  - Example: `["Crypto:BTC/USDT", "Crypto:ETH/USDT"]`
+
+- **portfolio_size**: 
+  - Portfolio size, i.e., the number of symbols to hold simultaneously
+  - Example: 10 means holding 10 symbols at the same time
+
+- **long_ratio**: 
+  - Long ratio, a float between 0 and 1
+  - Example: 0.5 means 50% long, 50% short
+  - Example: 1.0 means 100% long (no short positions)
+
+- **rebalance_frequency**: 
+  - Rebalancing frequency
+  - `'daily'`: Daily rebalancing
+  - `'weekly'`: Weekly rebalancing
+  - `'monthly'`: Monthly rebalancing
+
+## Indicator Code Writing
+
+Cross-sectional strategy indicator code needs to return scores and rankings for all symbols.
+
+### Indicator Code Template
+
+```python
+# Cross-sectional strategy indicator template
+# Input: data = {symbol1: df1, symbol2: df2, ...}
+# Output: scores = {symbol1: score1, symbol2: score2, ...}
+#         rankings = [symbol1, symbol2, ...]  # Optional, auto-sorted by scores if not provided
+
+scores = {}
+for symbol, df in data.items():
+    # Calculate factor values for each symbol
+    # Example: Momentum factor
+    momentum = (df['close'].iloc[-1] / df['close'].iloc[-20] - 1) * 100
+    
+    # Example: RSI indicator
+    def calculate_rsi(prices, period=14):
+        delta = prices.diff()
+        gain = (delta.where(delta > 0, 0)).rolling(window=period).mean()
+        loss = (-delta.where(delta < 0, 0)).rolling(window=period).mean()
+        rs = gain / loss
+        rsi = 100 - (100 / (1 + rs))
+        return rsi.iloc[-1]
+    
+    rsi = calculate_rsi(df['close'], 14)
+    
+    # Composite score (adjust weights as needed)
+    score = momentum * 0.6 + (100 - rsi) * 0.4
+    scores[symbol] = score
+
+# Optional: Manually specify ranking (if not provided, system will auto-sort by scores)
+# rankings = sorted(scores.keys(), key=lambda x: scores[x], reverse=True)
+```
+
+### Indicator Code Environment Variables
+
+The following variables are available when indicator code executes:
+
+- `symbols`: Symbol list `['Crypto:BTC/USDT', 'Crypto:ETH/USDT', ...]`
+- `data`: K-line data for all symbols `{symbol: df, ...}`
+- `scores`: Dictionary for storing scores (needs to be populated in code)
+- `rankings`: List for storing rankings (optional, auto-sorted by scores if not provided)
+- `np`: numpy
+- `pd`: pandas
+- `trading_config`: Trading configuration
+- `config`: Trading configuration (alias)
+
+### Output Requirements
+
+Indicator code needs to populate the `scores` dictionary:
+
+```python
+scores[symbol] = score_value  # score_value can be any numeric value
+```
+
+Optional: Populate the `rankings` list (if not provided, system will auto-sort by scores):
+
+```python
+rankings = [symbol1, symbol2, ...]  # Sorted by score from high to low
+```
+
+## Signal Generation Logic
+
+The system automatically generates trading signals based on the following logic:
+
+1. **Rank Symbols**: Rank all symbols based on indicator-calculated scores
+2. **Select Positions**:
+   - Top `portfolio_size * long_ratio` symbols → Long
+   - Bottom `portfolio_size * (1 - long_ratio)` symbols → Short
+3. **Generate Signals**:
+   - New symbols: If a symbol is not in current positions, generate open signal
+   - Remove symbols: If a symbol is not in target positions, generate close signal
+   - Direction change: If a symbol needs to change from long to short or vice versa, first generate close signal, then open signal
+
+## Usage Examples
+
+### 1. Create Cross-Sectional Strategy
+
+When creating a strategy via API, include in the request body:
+
+```json
+{
+  "strategy_name": "Momentum Cross-Sectional Strategy",
+  "trading_config": {
+    "cs_strategy_type": "cross_sectional",
+    "symbol_list": [
+      "Crypto:BTC/USDT",
+      "Crypto:ETH/USDT",
+      "Crypto:BNB/USDT",
+      "Crypto:ADA/USDT",
+      "Crypto:SOL/USDT"
+    ],
+    "portfolio_size": 5,
+    "long_ratio": 0.6,
+    "rebalance_frequency": "daily",
+    "timeframe": "1H",
+    "initial_capital": 10000,
+    "leverage": 1,
+    "market_type": "swap"
+  },
+  "indicator_config": {
+    "indicator_id": 123,
+    "indicator_code": "..."
+  }
+}
+```
+
+### 2. Indicator Code Example
+
+```python
+# Momentum + RSI Composite Score
+scores = {}
+for symbol, df in data.items():
+    # 20-period momentum
+    momentum = (df['close'].iloc[-1] / df['close'].iloc[-20] - 1) * 100
+    
+    # RSI
+    delta = df['close'].diff()
+    gain = (delta.where(delta > 0, 0)).rolling(window=14).mean()
+    loss = (-delta.where(delta < 0, 0)).rolling(window=14).mean()
+    rs = gain / loss
+    rsi = 100 - (100 / (1 + rs))
+    rsi_value = rsi.iloc[-1]
+    
+    # Composite score
+    score = momentum * 0.7 + (100 - rsi_value) * 0.3
+    scores[symbol] = score
+```
+
+## Notes
+
+1. **Data Retrieval**: The system retrieves K-line data for each symbol. If data retrieval fails for a symbol, that symbol will be skipped.
+2. **Rebalancing Frequency**: The system checks if rebalancing is needed based on `rebalance_frequency` settings. No trades will be executed if it's not time to rebalance.
+3. **Batch Execution**: All trading signals are executed in parallel, with a maximum of 10 concurrent trades.
+4. **Position Management**: The system automatically manages positions to ensure the portfolio meets configuration requirements.
+5. **Compatibility**: Cross-sectional strategy functionality does not affect existing single-symbol strategies. Both can coexist.
+
+## Database Migration
+
+If you need to store cross-sectional strategy configuration in database fields (optional), you can run the migration script:
+
+```sql
+-- Run migrations/add_cross_sectional_strategy.sql
+```
+
+If you don't run the migration script, cross-sectional strategy configuration will be stored in the `trading_config` JSON field, and functionality will work normally.
+
+## Troubleshooting
+
+1. **Strategy Not Executing**:
+   - Check if `cs_strategy_type` is `'cross_sectional'`
+   - Check if `symbol_list` is not empty
+   - Check if rebalancing frequency time has been reached
+
+2. **Indicator Execution Failed**:
+   - Check if indicator code correctly populates the `scores` dictionary
+   - Check if data for all symbols can be retrieved normally
+
+3. **Signals Not Generated**:
+   - Check if `portfolio_size` is less than or equal to the length of `symbol_list`
+   - Check if scores are valid
diff --git a/docs/examples/cross_sectional_momentum_rsi.py b/docs/examples/cross_sectional_momentum_rsi.py
new file mode 100644
index 0000000..30af6bf
--- /dev/null
+++ b/docs/examples/cross_sectional_momentum_rsi.py
@@ -0,0 +1,67 @@
+# ============================================================
+# 截面策略指标示例 - 动量+RSI综合评分
+# Cross-Sectional Strategy Indicator Example
+# Momentum + RSI Composite Score
+# ============================================================
+# 
+# 使用方法:
+# 1. 在交易助手中创建截面策略
+# 2. 选择此指标作为策略指标
+# 3. 配置标的列表、持仓大小、做多比例等参数
+# 
+# 评分逻辑:
+# - 动量因子 (20周期): 价格变化率，越高越好
+# - RSI指标 (14周期): 反转RSI值，越低越好（100 - RSI）
+# - 综合评分: 70% 动量 + 30% RSI反转值
+# 
+# ============================================================
+
+# 截面策略指标
+# 输入: data = {symbol1: df1, symbol2: df2, ...}
+# 输出: scores = {symbol1: score1, symbol2: score2, ...}
+
+scores = {}
+
+# Iterate through all symbols
+for symbol, df in data.items():
+    # Ensure we have enough data
+    if len(df) < 20:
+        scores[symbol] = 0
+        continue
+    
+    # === 1. 计算动量因子 (20周期) ===
+    # 动量 = (当前价格 / 20周期前价格 - 1) * 100
+    momentum = (df['close'].iloc[-1] / df['close'].iloc[-20] - 1) * 100
+    
+    # === 2. 计算RSI指标 (14周期) ===
+    def calculate_rsi(prices, period=14):
+        """计算RSI指标"""
+        delta = prices.diff()
+        gain = (delta.where(delta > 0, 0)).rolling(window=period).mean()
+        loss = (-delta.where(delta < 0, 0)).rolling(window=period).mean()
+        rs = gain / loss
+        rsi = 100 - (100 / (1 + rs))
+        return rsi.iloc[-1]
+    
+    rsi_value = calculate_rsi(df['close'], 14)
+    
+    # === 3. 综合评分 ===
+    # 动量越高 = 评分越高
+    # RSI越低（超卖）= 评分越高（100 - RSI）
+    # 权重: 70% 动量 + 30% RSI反转值
+    momentum_score = momentum
+    rsi_score = 100 - rsi_value  # 反转RSI（RSI越低，评分越高）
+    
+    composite_score = momentum_score * 0.7 + rsi_score * 0.3
+    
+    scores[symbol] = composite_score
+
+# === 可选: 手动指定排序 ===
+# 如果不提供，系统会根据scores自动排序
+# rankings = sorted(scores.keys(), key=lambda x: scores[x], reverse=True)
+
+# === 系统自动处理逻辑 ===
+# 1. 根据评分对所有标的进行排序（从高到低）
+# 2. 选择排名靠前的N个标的做多（基于 portfolio_size * long_ratio）
+# 3. 选择排名靠后的N个标的做空（基于 portfolio_size * (1 - long_ratio)）
+# 4. 自动生成买入/卖出/平仓信号
diff --git a/quantdinger_vue/src/locales/lang/en-US.js b/quantdinger_vue/src/locales/lang/en-US.js
index a538184..46fe4a9 100644
--- a/quantdinger_vue/src/locales/lang/en-US.js
+++ b/quantdinger_vue/src/locales/lang/en-US.js
@@ -1324,6 +1324,21 @@ const locale = {
   'trading-assistant.form.symbols': 'Trading Pairs (Multi-select)',
   'trading-assistant.form.symbolHint': 'Symbol format depends on the selected market',
   'trading-assistant.form.symbolsHint': 'Select multiple pairs to create strategies for each',
+  'trading-assistant.form.strategyType': 'Strategy Type',
+  'trading-assistant.form.strategyTypeSingle': 'Single Symbol Strategy',
+  'trading-assistant.form.strategyTypeCrossSectional': 'Cross-Sectional Strategy',
+  'trading-assistant.form.strategyTypeHint': 'Single Symbol: Trade a single symbol; Cross-Sectional: Manage a portfolio of multiple symbols',
+  'trading-assistant.form.symbolList': 'Symbol List',
+  'trading-assistant.form.symbolListHint': 'Select multiple symbols, strategy will rank and rebalance based on indicator scores',
+  'trading-assistant.form.portfolioSize': 'Portfolio Size',
+  'trading-assistant.form.portfolioSizeHint': 'Number of symbols to hold simultaneously',
+  'trading-assistant.form.longRatio': 'Long Ratio',
+  'trading-assistant.form.longRatioHint': 'Proportion of long positions (0-1), e.g. 0.5 means 50% long, 50% short',
+  'trading-assistant.form.rebalanceFrequency': 'Rebalance Frequency',
+  'trading-assistant.form.rebalanceDaily': 'Daily',
+  'trading-assistant.form.rebalanceWeekly': 'Weekly',
+  'trading-assistant.form.rebalanceMonthly': 'Monthly',
+  'trading-assistant.form.rebalanceFrequencyHint': 'Frequency of portfolio rebalancing',
   'trading-assistant.form.addSymbol': 'Add Symbol',
   'trading-assistant.form.addSymbolTitle': 'Add Symbol to Watchlist',
   'trading-assistant.form.searchSymbolPlaceholder': 'Search by code, e.g. BTC, AAPL',
@@ -1439,6 +1454,8 @@ const locale = {
   'trading-assistant.validation.mt5ServerRequired': 'Please enter MT5 server',
   'trading-assistant.validation.mt5LoginRequired': 'Please enter MT5 account number',
   'trading-assistant.validation.mt5PasswordRequired': 'Please enter MT5 password',
+  'trading-assistant.validation.portfolioSizeRequired': 'Please enter portfolio size',
+  'trading-assistant.validation.longRatioRequired': 'Please enter long ratio',
   'trading-assistant.exchange.mt5ConnectionSuccess': 'MT5 connected successfully',
   'trading-assistant.exchange.mt5ConnectionFailed': 'MT5 connection failed. Please check if terminal is running.',
   'trading-assistant.form.notifyChannels': 'Notification Channels',
diff --git a/quantdinger_vue/src/locales/lang/zh-CN.js b/quantdinger_vue/src/locales/lang/zh-CN.js
index c22a742..a8aa5dc 100644
--- a/quantdinger_vue/src/locales/lang/zh-CN.js
+++ b/quantdinger_vue/src/locales/lang/zh-CN.js
@@ -1228,6 +1228,21 @@ const locale = {
   'trading-assistant.form.symbolHint': '目前仅支持加密货币交易对',
   'trading-assistant.form.symbolHintCrypto': '加密货币：使用BTC/USDT等交易对格式',
   'trading-assistant.form.symbolsHint': '选择多个交易对，将自动创建多个策略',
+  'trading-assistant.form.strategyType': '策略类型',
+  'trading-assistant.form.strategyTypeSingle': '单标的策略',
+  'trading-assistant.form.strategyTypeCrossSectional': '截面策略',
+  'trading-assistant.form.strategyTypeHint': '单标的策略：针对单个标的进行交易；截面策略：同时管理多个标的的组合',
+  'trading-assistant.form.symbolList': '标的列表',
+  'trading-assistant.form.symbolListHint': '选择多个标的，策略将根据指标评分进行排序和调仓',
+  'trading-assistant.form.portfolioSize': '持仓组合大小',
+  'trading-assistant.form.portfolioSizeHint': '策略同时持有的标的数量',
+  'trading-assistant.form.longRatio': '做多比例',
+  'trading-assistant.form.longRatioHint': '持仓中做多标的的比例（0-1），例如0.5表示50%做多，50%做空',
+  'trading-assistant.form.rebalanceFrequency': '调仓频率',
+  'trading-assistant.form.rebalanceDaily': '每日',
+  'trading-assistant.form.rebalanceWeekly': '每周',
+  'trading-assistant.form.rebalanceMonthly': '每月',
+  'trading-assistant.form.rebalanceFrequencyHint': '策略重新调整持仓组合的频率',
   'trading-assistant.form.addSymbol': '添加交易对',
   'trading-assistant.form.addSymbolTitle': '添加交易对到自选列表',
   'trading-assistant.form.searchSymbolPlaceholder': '输入代码搜索，如 BTC、AAPL',
@@ -1317,6 +1332,8 @@ const locale = {
   'trading-assistant.validation.mt5ServerRequired': '请输入 MT5 服务器',
   'trading-assistant.validation.mt5LoginRequired': '请输入 MT5 账户号',
   'trading-assistant.validation.mt5PasswordRequired': '请输入 MT5 密码',
+  'trading-assistant.validation.portfolioSizeRequired': '请输入持仓组合大小',
+  'trading-assistant.validation.longRatioRequired': '请输入做多比例',
   'trading-assistant.exchange.mt5ConnectionSuccess': 'MT5 连接成功',
   'trading-assistant.exchange.mt5ConnectionFailed': 'MT5 连接失败，请检查终端是否运行',
   'trading-assistant.form.notifyChannels': '通知渠道',
diff --git a/quantdinger_vue/src/views/trading-assistant/components/PositionRecords.vue b/quantdinger_vue/src/views/trading-assistant/components/PositionRecords.vue
index 10a6339..690a134 100644
--- a/quantdinger_vue/src/views/trading-assistant/components/PositionRecords.vue
+++ b/quantdinger_vue/src/views/trading-assistant/components/PositionRecords.vue
@@ -160,7 +160,12 @@ export default {
             if (!isFinite(lev) || lev <= 0) lev = 1
             if (mt === 'spot') lev = 1
 
-            const entryPrice = parseFloat(position.entry_price || position.entryPrice || '0') || 0
+            // 处理 entry_price：如果为 0 或 null，尝试使用 current_price 作为后备
+            let entryPrice = parseFloat(position.entry_price || position.entryPrice || 0)
+            if (!entryPrice || entryPrice <= 0) {
+              // 如果 entry_price 无效，尝试使用 current_price（可能是新开仓，价格相同）
+              entryPrice = parseFloat(position.current_price || position.currentPrice || 0)
+            }
             const size = parseFloat(position.size || '0') || 0
             const pnl = parseFloat(position.unrealized_pnl || position.unrealizedPnl || '0') || 0
             let pnlPercent = parseFloat(position.pnl_percent || position.pnlPercent || '0') || 0
@@ -177,8 +182,8 @@ export default {
               id: position.id || index,
               symbol: position.symbol || '',
               side: position.side || 'long',
-              size: position.size || '0',
-              entry_price: position.entry_price || position.entryPrice || '0',
+              size: size > 0 ? size.toString() : '0',
+              entry_price: entryPrice > 0 ? entryPrice.toString() : (position.entry_price || position.entryPrice || '0'),
               current_price: position.current_price || position.currentPrice || '0',
               unrealized_pnl: position.unrealized_pnl || position.unrealizedPnl || '0',
               pnl_percent: pnlPercent,
diff --git a/quantdinger_vue/src/views/trading-assistant/index.vue b/quantdinger_vue/src/views/trading-assistant/index.vue
index be9b7f1..2c0d921 100644
--- a/quantdinger_vue/src/views/trading-assistant/index.vue
+++ b/quantdinger_vue/src/views/trading-assistant/index.vue
@@ -467,7 +467,103 @@
                     :placeholder="$t('trading-assistant.placeholders.inputStrategyName')" />
                 </a-form-item>
 
+                <!-- 策略类型选择 -->
+                <a-form-item :label="$t('trading-assistant.form.strategyType')">
+                  <a-radio-group
+                    v-decorator="['cs_strategy_type', { initialValue: 'single' }]"
+                    @change="handleStrategyTypeChange">
+                    <a-radio value="single">{{ $t('trading-assistant.form.strategyTypeSingle') }}</a-radio>
+                    <a-radio value="cross_sectional">{{ $t('trading-assistant.form.strategyTypeCrossSectional') }}</a-radio>
+                  </a-radio-group>
+                  <div class="form-item-hint">
+                    {{ $t('trading-assistant.form.strategyTypeHint') }}
+                  </div>
+                </a-form-item>
+
+                <!-- 截面策略配置 -->
+                <template v-if="form.getFieldValue('cs_strategy_type') === 'cross_sectional'">
+                  <a-form-item :label="$t('trading-assistant.form.symbolList')">
+                    <a-select
+                      v-model="crossSectionalSymbols"
+                      mode="multiple"
+                      :placeholder="$t('trading-assistant.placeholders.selectSymbols')"
+                      show-search
+                      :filter-option="filterWatchlistOptionWithAdd"
+                      :loading="loadingWatchlist"
+                      @change="handleCrossSectionalSymbolChange"
+                      :getPopupContainer="(triggerNode) => triggerNode.parentNode"
+                      :maxTagCount="5">
+                      <a-select-option
+                        v-for="item in watchlist"
+                        :key="`${item.market}:${item.symbol}`"
+                        :value="`${item.market}:${item.symbol}`">
+                        <div class="symbol-option">
+                          <a-tag :color="getMarketColor(item.market)" style="margin-right: 8px; margin-bottom: 0;">
+                            {{ item.market }}
+                          </a-tag>
+                          <span class="symbol-name">{{ item.symbol }}</span>
+                          <span v-if="item.name" class="symbol-name-extra">{{ item.name }}</span>
+                        </div>
+                      </a-select-option>
+                      <a-select-option key="__add_symbol_option__" value="__add_symbol_option__" class="add-symbol-option">
+                        <div style="width: 100%; text-align: center; padding: 4px 0; color: #1890ff; cursor: pointer;">
+                          <a-icon type="plus" style="margin-right: 4px;" />
+                          <span>{{ $t('trading-assistant.form.addSymbol') }}</span>
+                        </div>
+                      </a-select-option>
+                    </a-select>
+                    <div class="form-item-hint">
+                      {{ $t('trading-assistant.form.symbolListHint') }}
+                    </div>
+                  </a-form-item>
+
+                  <a-row :gutter="16">
+                    <a-col :xs="24" :sm="12">
+                      <a-form-item :label="$t('trading-assistant.form.portfolioSize')">
+                        <a-input-number
+                          v-decorator="['portfolio_size', { initialValue: 10, rules: [{ required: true, message: $t('trading-assistant.validation.portfolioSizeRequired') }] }]"
+                          :min="1"
+                          :max="100"
+                          :step="1"
+                          style="width: 100%" />
+                        <div class="form-item-hint">
+                          {{ $t('trading-assistant.form.portfolioSizeHint') }}
+                        </div>
+                      </a-form-item>
+                    </a-col>
+                    <a-col :xs="24" :sm="12">
+                      <a-form-item :label="$t('trading-assistant.form.longRatio')">
+                        <a-input-number
+                          v-decorator="['long_ratio', { initialValue: 0.5, rules: [{ required: true, message: $t('trading-assistant.validation.longRatioRequired') }] }]"
+                          :min="0"
+                          :max="1"
+                          :step="0.1"
+                          :precision="2"
+                          style="width: 100%" />
+                        <div class="form-item-hint">
+                          {{ $t('trading-assistant.form.longRatioHint') }}
+                        </div>
+                      </a-form-item>
+                    </a-col>
+                  </a-row>
+
+                  <a-form-item :label="$t('trading-assistant.form.rebalanceFrequency')">
+                    <a-select
+                      v-decorator="['rebalance_frequency', { initialValue: 'daily' }]"
+                      style="width: 100%">
+                      <a-select-option value="daily">{{ $t('trading-assistant.form.rebalanceDaily') }}</a-select-option>
+                      <a-select-option value="weekly">{{ $t('trading-assistant.form.rebalanceWeekly') }}</a-select-option>
+                      <a-select-option value="monthly">{{ $t('trading-assistant.form.rebalanceMonthly') }}</a-select-option>
+                    </a-select>
+                    <div class="form-item-hint">
+                      {{ $t('trading-assistant.form.rebalanceFrequencyHint') }}
+                    </div>
+                  </a-form-item>
+                </template>
+
+                <!-- 单标的策略：原有的标的选择 -->
                 <a-form-item
+                  v-if="form.getFieldValue('cs_strategy_type') !== 'cross_sectional'"
                   :label="isEditMode ? $t('trading-assistant.form.symbol') : $t('trading-assistant.form.symbols')">
                   <!-- 编辑模式：单选 -->
                   <a-select
@@ -1378,7 +1474,7 @@
 </template>
 
 <script>
-import { getStrategyList, startStrategy, stopStrategy, deleteStrategy, updateStrategy, testExchangeConnection, getStrategyEquityCurve, batchCreateStrategies, batchStartStrategies, batchStopStrategies, batchDeleteStrategies } from '@/api/strategy'
+import { getStrategyList, startStrategy, stopStrategy, deleteStrategy, updateStrategy, createStrategy, testExchangeConnection, getStrategyEquityCurve, batchCreateStrategies, batchStartStrategies, batchStopStrategies, batchDeleteStrategies } from '@/api/strategy'
 import { getWatchlist, addWatchlist, searchSymbols, getHotSymbols } from '@/api/market'
 import { listExchangeCredentials, getExchangeCredential, createExchangeCredential } from '@/api/credentials'
 import { getNotificationSettings } from '@/api/user'
@@ -1785,6 +1881,8 @@ export default {
       suppressApiClearOnce: false,
       // 多币种选择（创建模式）
       selectedSymbols: [],
+      // 截面策略标的列表
+      crossSectionalSymbols: [],
       // 策略组折叠状态
       collapsedGroups: {},
       // 分组模式: 'strategy' 或 'symbol'
@@ -2090,6 +2188,36 @@ export default {
       }
       this.handleMultiSymbolChange(vals)
     },
+    handleStrategyTypeChange (e) {
+      const strategyType = e.target.value
+      // 当切换到单标的策略时，清空截面策略的标的列表
+      if (strategyType === 'single') {
+        this.crossSectionalSymbols = []
+      }
+    },
+    handleCrossSectionalSymbolChange (vals) {
+      // 检查是否点击了"添加"选项
+      if (vals && vals.includes('__add_symbol_option__')) {
+        // 从选中列表中移除特殊选项
+        this.crossSectionalSymbols = vals.filter(v => v !== '__add_symbol_option__')
+        // 打开添加弹窗
+        this.showAddSymbolModal = true
+        // 加载热门标的
+        this.loadHotSymbols(this.addSymbolMarket)
+        return
+      }
+      this.crossSectionalSymbols = vals || []
+
+      // 更新市场类型基于选中的标的
+      if (vals && vals.length > 0) {
+        const firstVal = vals[0]
+        if (typeof firstVal === 'string' && firstVal.includes(':')) {
+          const idx = firstVal.indexOf(':')
+          const market = firstVal.slice(0, idx)
+          this.selectedMarketCategory = market || 'Crypto'
+        }
+      }
+    },
     getMarketColor (market) {
       const colors = {
         USStock: 'green',
@@ -2585,6 +2713,38 @@ export default {
         const scaleObj = (tc.scale && typeof tc.scale === 'object') ? tc.scale : null
         const posObj = (tc.position && typeof tc.position === 'object') ? tc.position : null
 
+        // 加载截面策略配置
+        const strategyType = tc.strategy_type || strategy.strategy_type || 'single'
+        if (strategyType === 'cross_sectional') {
+          this.form.setFieldsValue({
+            cs_strategy_type: 'cross_sectional',
+            portfolio_size: tc.portfolio_size || 10,
+            long_ratio: tc.long_ratio || 0.5,
+            rebalance_frequency: tc.rebalance_frequency || 'daily'
+          })
+          // 加载标的列表
+          if (tc.symbol_list && Array.isArray(tc.symbol_list)) {
+            this.crossSectionalSymbols = tc.symbol_list
+          } else if (strategy.symbol_list) {
+            // 如果trading_config中没有，尝试从主表字段读取
+            try {
+              const symbolList = typeof strategy.symbol_list === 'string' ? JSON.parse(strategy.symbol_list) : strategy.symbol_list
+              if (Array.isArray(symbolList)) {
+                this.crossSectionalSymbols = symbolList
+              }
+            } catch (e) {
+              this.crossSectionalSymbols = []
+            }
+          } else {
+            this.crossSectionalSymbols = []
+          }
+        } else {
+          this.form.setFieldsValue({
+            cs_strategy_type: 'single'
+          })
+          this.crossSectionalSymbols = []
+        }
+
         // Backward compatible: nested configs from indicator-analysis backtest modal
         const trendAddObj = scaleObj && scaleObj.trendAdd ? scaleObj.trendAdd : null
         const dcaAddObj = scaleObj && scaleObj.dcaAdd ? scaleObj.dcaAdd : null
@@ -3437,9 +3597,19 @@ export default {
 
           // 创建模式：验证多币种选择
           if (!this.isEditMode) {
-            if (!this.selectedSymbols || this.selectedSymbols.length === 0) {
-              this.$message.warning(this.$t('trading-assistant.validation.symbolsRequired'))
-              return
+            const strategyType = this.form.getFieldValue('cs_strategy_type') || 'single'
+            if (strategyType === 'cross_sectional') {
+              // 截面策略：验证截面策略标的列表
+              if (!this.crossSectionalSymbols || this.crossSectionalSymbols.length === 0) {
+                this.$message.warning(this.$t('trading-assistant.validation.symbolsRequired'))
+                return
+              }
+            } else {
+              // 单标的策略：验证多币种选择
+              if (!this.selectedSymbols || this.selectedSymbols.length === 0) {
+                this.$message.warning(this.$t('trading-assistant.validation.symbolsRequired'))
+                return
+              }
             }
           }
 
@@ -3620,7 +3790,13 @@ export default {
                 // AI智能决策过滤
                 enable_ai_filter: enableAiFilter,
                 // 指标参数（外部传递）
-                indicator_params: this.indicatorParamValues
+                indicator_params: this.indicatorParamValues,
+                // 截面策略配置
+                strategy_type: values.cs_strategy_type || 'single',
+                symbol_list: values.cs_strategy_type === 'cross_sectional' ? this.crossSectionalSymbols : undefined,
+                portfolio_size: values.cs_strategy_type === 'cross_sectional' ? (values.portfolio_size || 10) : undefined,
+                long_ratio: values.cs_strategy_type === 'cross_sectional' ? (values.long_ratio || 0.5) : undefined,
+                rebalance_frequency: values.cs_strategy_type === 'cross_sectional' ? (values.rebalance_frequency || 'daily') : undefined
               }
             }
 
@@ -3636,19 +3812,35 @@ export default {
               basePayload.trading_config.symbol = parsedSymbol
               res = await updateStrategy(this.editingStrategy.id, basePayload)
             } else {
-              // 创建模式：批量创建策略
+              // 创建模式：批量创建策略或截面策略
               basePayload.user_id = 1
               basePayload.strategy_type = 'IndicatorStrategy'
-              basePayload.symbols = this.selectedSymbols // 多币种数组
 
-              res = await batchCreateStrategies(basePayload)
+              // 如果是截面策略，只创建一个策略（使用 createStrategy）
+              if (values.cs_strategy_type === 'cross_sectional') {
+                // 截面策略：只创建一个策略，标的列表存储在 trading_config 中
+                basePayload.strategy_type = 'IndicatorStrategy' // 保持为 IndicatorStrategy，截面类型在 trading_config 中
+                // 截面策略不需要设置 symbol，因为它是多标的的
+                basePayload.trading_config.symbol = null
+                // 使用 createStrategy 创建单个策略
+                res = await createStrategy(basePayload)
+              } else {
+                // 单标的策略：批量创建多个策略（每个标的一个策略）
+                basePayload.symbols = this.selectedSymbols // 多币种数组
+                res = await batchCreateStrategies(basePayload)
+              }
             }
 
             if (res.code === 1) {
               if (this.isEditMode) {
                 this.$message.success(this.$t('trading-assistant.messages.updateSuccess'))
               } else {
-                const totalCreated = res.data?.total_created || this.selectedSymbols.length
+                // 根据策略类型计算创建的策略数量
+                const strategyType = values.cs_strategy_type || 'single'
+                const symbolCount = strategyType === 'cross_sectional'
+                  ? this.crossSectionalSymbols.length
+                  : this.selectedSymbols.length
+                const totalCreated = res.data?.total_created || symbolCount
                 this.$message.success(this.$t('trading-assistant.messages.batchCreateSuccess', { count: totalCreated }))
               }
               // Save credential to vault (crypto exchanges only, IBKR/MT5 don't need this)