diff --git a/src/main/java/com/chaozhanggui/system/cashierservice/service/ProductService.java b/src/main/java/com/chaozhanggui/system/cashierservice/service/ProductService.java
index 3bf728e..ca6c907 100644
--- a/src/main/java/com/chaozhanggui/system/cashierservice/service/ProductService.java
+++ b/src/main/java/com/chaozhanggui/system/cashierservice/service/ProductService.java
@@ -141,7 +141,7 @@ public class ProductService {
                     throw new MsgException("库存不足，下单失败");
                 }
             }else {
-                tbProductSkuMapper.decrStockUnCheck(productId, decrNum);
+                tbProductMapper.decrStockUnCheck(productId, decrNum);
             }
         }else {
             if (product.getIsStock() == 1) {