diff --git a/backtest/backtest_result_calculator.py b/backtest/backtest_result_calculator.py
index fabed66..42b8f57 100644
--- a/backtest/backtest_result_calculator.py
+++ b/backtest/backtest_result_calculator.py
@@ -200,6 +200,7 @@ def _add_trade_record(self, trades_list, pos, stock, exit_date, exit_price, tax,
             "stockno": stock,
             "entry_date": pos["entry_date"],
             "entry_price": pos["entry_price"],
+            "buy_signal": pos.get("buy_signal"),
             "exit_date": exit_date,
             "exit_price": exit_price,
             "hold_days": hold_days,
@@ -243,6 +244,7 @@ def analyze_transactions(self, df_records: pd.DataFrame, tax: float = 0.002, out
                     active_positions[stock] = {
                         "entry_date": date,
                         "entry_price": price,
+                        "buy_signal": row.get("buy_signal"),
                         "max_price": price,
                         "max_date": date,
                         "min_price": price,
diff --git a/backtest/backtest_strategy.py b/backtest/backtest_strategy.py
index 470b9fa..b9ba0b7 100644
--- a/backtest/backtest_strategy.py
+++ b/backtest/backtest_strategy.py
@@ -189,7 +189,15 @@ def generate_date_list(self) -> List[str]:
             d += timedelta(days=1)
         return result
 
-    def upgrade_records(self, action: str, stockno: str, ope_date: str, price: float, update_time: str):
+    def upgrade_records(
+        self,
+        action: str,
+        stockno: str,
+        ope_date: str,
+        price: float,
+        update_time: str,
+        buy_signal: Optional[str] = None,
+    ):
         """
         更新交易或持仓记录表。
 
@@ -233,6 +241,7 @@ def upgrade_records(self, action: str, stockno: str, ope_date: str, price: float
             "current_weight": current_weight,
             "price": price,
             "stockno": stockno,
+            "buy_signal": buy_signal,
             "operation_succ": 1,
             "update_time": update_time,
             "version": f"{self.strategy.__class__.__name__}",
@@ -280,7 +289,18 @@ def run(self):
                 trade_date, trade_price = self.data_loader.get_next_trade_day_price(stockno, order["request_date"])
                 if trade_date and pd.to_datetime(trade_date) <= pd.to_datetime(date):
                     # 成交
-                    self.upgrade_records(action, stockno, trade_date, trade_price, order["request_date"])
+                    if action == "SELL":
+                        buy_signal = self.holdings.get(stockno, {}).get("buy_signal")
+                    else:
+                        buy_signal = info.get("buy_signal")
+                    self.upgrade_records(
+                        action,
+                        stockno,
+                        trade_date,
+                        trade_price,
+                        order["request_date"],
+                        buy_signal=buy_signal,
+                    )
                     for table in self.detail_tables: # 存入详细信息
                         extra = order["info"].get(table, {})
                         self.update_detail_record(table,{
@@ -311,7 +331,14 @@ def run(self):
                 if stockno not in self.holdings:
                     continue
                 recent_price = self.data_loader.get_recent_price(stockno, date)
-                self.upgrade_records("HOLD", stockno, date, recent_price, date)
+                self.upgrade_records(
+                    "HOLD",
+                    stockno,
+                    date,
+                    recent_price,
+                    date,
+                    buy_signal=self.holdings[stockno].get("buy_signal"),
+                )
 
             # 3. 卖出
             for stockno in self.holdings.keys():