diff --git a/eladmin-system/src/main/java/cn/ysk/cashier/service/impl/shopimpl/TbShopTableServiceImpl.java b/eladmin-system/src/main/java/cn/ysk/cashier/service/impl/shopimpl/TbShopTableServiceImpl.java
index 0aec8013..90ff9673 100644
--- a/eladmin-system/src/main/java/cn/ysk/cashier/service/impl/shopimpl/TbShopTableServiceImpl.java
+++ b/eladmin-system/src/main/java/cn/ysk/cashier/service/impl/shopimpl/TbShopTableServiceImpl.java
@@ -2118,7 +2118,7 @@ public class TbShopTableServiceImpl implements TbShopTableService {
         returnCoupon(orderInfo, true);
 
         // 设置折扣比例
-        orderInfo.setDiscountRatio(payDTO.getDiscount());
+        orderInfo.setDiscountRatio(payDTO.getDiscount().setScale(4, RoundingMode.DOWN));
 
         Set<String> productIdSet = new HashSet<>();
         List<TbCashierCart> cashierCarts = mpCashierCartService.selectByOrderIdAndState(orderInfo.getId());