diff --git a/src/main/java/com/chaozhanggui/system/cashierservice/service/CartService.java b/src/main/java/com/chaozhanggui/system/cashierservice/service/CartService.java
index dff21e5..693f018 100644
--- a/src/main/java/com/chaozhanggui/system/cashierservice/service/CartService.java
+++ b/src/main/java/com/chaozhanggui/system/cashierservice/service/CartService.java
@@ -713,6 +713,7 @@ public class CartService {
                 throw new MsgException("存在不可用优惠券");
             }
             couponVo.setCurrentUseNum(item.getNum());
+            couponVo.setFinalUseNum(item.getNum());
             infoDTO.getProductCouponMap().put(item.getUserCouponId().toString(), couponVo);
         });