diff --git a/eladmin-system/src/main/java/cn/ysk/cashier/service/impl/TbPayServiceImpl.java b/eladmin-system/src/main/java/cn/ysk/cashier/service/impl/TbPayServiceImpl.java
index 55430f49..45a0b56d 100644
--- a/eladmin-system/src/main/java/cn/ysk/cashier/service/impl/TbPayServiceImpl.java
+++ b/eladmin-system/src/main/java/cn/ysk/cashier/service/impl/TbPayServiceImpl.java
@@ -321,7 +321,9 @@ public class TbPayServiceImpl implements TbPayService {
             throw new BadRequestException("用户不存在或已被禁用");
         }
 
-        long flag = shopUserMapper.decrBalance(Integer.valueOf(orderInfo.getUserId()), orderInfo.getOrderAmount());
+        BigDecimal payMount = discount == null ? orderInfo.getOrderAmount() : orderInfo.getOrderAmount().multiply(BigDecimal.valueOf(discount)).setScale(2, RoundingMode.UP);
+
+        long flag = shopUserMapper.decrBalance(Integer.valueOf(orderInfo.getUserId()), payMount);
         if (flag < 1) {
             throw new BadRequestException("余额不足或扣除余额失败");
         }
@@ -336,7 +338,7 @@ public class TbPayServiceImpl implements TbPayService {
         userFlow.setType("-");
         shopUserFlowMapper.insert(userFlow);
 
-        orderInfo.setPayAmount(discount == null ? orderInfo.getOrderAmount() : orderInfo.getOrderAmount().multiply(BigDecimal.valueOf(discount)).setScale(2, RoundingMode.UP));
+        orderInfo.setPayAmount(payMount);
         if (discount != null && discount != 1) {
             orderInfo.setDiscountAmount(orderInfo.getOrderAmount().subtract(orderInfo.getPayAmount()));
             orderInfo.setDiscountRatio(BigDecimal.valueOf(discount));