diff --git a/app/api/endpoints/merchant_order.py b/app/api/endpoints/merchant_order.py
index 8a855b8..04ff3a8 100644
--- a/app/api/endpoints/merchant_order.py
+++ b/app/api/endpoints/merchant_order.py
@@ -331,7 +331,7 @@ async def complete_order(
         
         # 对商家进行结算
         account_manager = AccountManager(db)
-        settlement_amount = float(order.MerchantProductDB.settlement_amount) * order.MerchantOrderDB.qty
+        settlement_amount = float(order.merchant_product.settlement_amount) * order.qty
         if settlement_amount > 0:
             account_manager.change_balance(
                 user_id=order.merchant.user_id,