diff --git a/qlib/backtest/exchange.py b/qlib/backtest/exchange.py
index 3da1ebfdc..4fc01d8e2 100644
--- a/qlib/backtest/exchange.py
+++ b/qlib/backtest/exchange.py
@@ -246,8 +246,8 @@ class Exchange:
             order, trade_account.current if trade_account else position
         )
         # update account
-        if trade_val > 0:
-            # If the order can only be deal 0 trade_val. Nothing to be updated
+        if order.deal_amount > 1e-5:
+            # If the order can only be deal 0 aomount. Nothing to be updated
             # Otherwise, it will result some stock with 0 amount in the position
             if trade_account:
                 trade_account.update_order(order=order, trade_val=trade_val, cost=trade_cost, trade_price=trade_price)
@@ -454,30 +454,21 @@ class Exchange:
         trade_price = self.get_deal_price(order.stock_id, order.start_time, order.end_time)
         if order.direction == Order.SELL:
             # sell
-            current_amount = position.get_stock_amount(order.stock_id)
-
             if position is not None:
+                current_amount = (
+                    position.get_stock_amount(order.stock_id) if position.check_stock(order.stock_id) else 0
+                )
                 if np.isclose(order.amount, current_amount):
                     # when selling last stock. The amount don't need rounding
                     order.deal_amount = order.amount
                 elif order.amount > current_amount:
-                    self.logger.warning(
-                        f"order amount {order.amount} is greater than current amount {current_amount}, {current_amount} amount of stock is dealed"
-                    )
                     order.deal_amount = self.round_amount_by_trade_unit(current_amount, order.factor)
                 else:
                     order.deal_amount = self.round_amount_by_trade_unit(order.amount, order.factor)
             else:
                 # TODO: We don't know current position.
                 #  We choose to sell all
-
-                if not np.isclose(order.amount, current_amount) and order.amount > current_amount:
-                    self.logger.warning(
-                        f"order amount {order.amount} is greater than current amount {current_amount}, {current_amount} amount of stock is dealed"
-                    )
-                    order.deal_amount = current_amount
-                else:
-                    order.deal_amount = order.amount
+                order.deal_amount = order.amount
 
             order.deal_amount = self._get_amount_by_volume(
                 order.stock_id, order.start_time, order.end_time, order.deal_amount
diff --git a/qlib/backtest/position.py b/qlib/backtest/position.py
index c6368606a..92b549063 100644
--- a/qlib/backtest/position.py
+++ b/qlib/backtest/position.py
@@ -73,6 +73,9 @@ class Position:
     def del_stock(self, stock_id):
         del self.position[stock_id]
 
+    def check_stock(self, stock_id):
+        return stock_id in self.position
+
     def update_order(self, order, trade_val, cost, trade_price):
         # handle order, order is a order class, defined in exchange.py
         if order.direction == Order.BUY: