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 af5a37d2..27a8ceaf 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
@@ -2190,7 +2190,7 @@ public class TbShopTableServiceImpl implements TbShopTableService {
     private BigDecimal resetAmountByDiscount(PayDTO payDTO, TbOrderInfo orderInfo) {
         List<TbCashierCart> cashierCarts = mpCashierCartService.selectByOrderIdAndState(orderInfo.getId());
         List<TbOrderDetail> detailList = mpOrderDetailService.selectByOrderId(orderInfo.getId());
-        BigDecimal discount = payDTO.getDiscount();
+        BigDecimal discount = payDTO.getDiscount().setScale(4, RoundingMode.DOWN);
         BigDecimal totalAmount = BigDecimal.ZERO;
         for (TbCashierCart cashierCart : cashierCarts) {
             if (cashierCart.getUserCouponId() == null) {