diff --git a/src/main/java/com/chaozhanggui/system/cashierservice/service/PayService.java b/src/main/java/com/chaozhanggui/system/cashierservice/service/PayService.java
index 710baf5..660d4e4 100644
--- a/src/main/java/com/chaozhanggui/system/cashierservice/service/PayService.java
+++ b/src/main/java/com/chaozhanggui/system/cashierservice/service/PayService.java
@@ -246,7 +246,7 @@ public class PayService {
 
 
         orderInfo.setPayAmount(ObjectUtil.isEmpty(payAmount) ? orderInfo.getOrderAmount() : payAmount);
-        orderInfo.setDiscountAmount(ObjectUtil.isEmpty(discountAmount) ? BigDecimal.ZERO : discountAmount);
+        orderInfo.setDiscountAmount(ObjectUtil.isEmpty(discountAmount) ? null : discountAmount);
         orderInfo.setDiscountRatio(ObjectUtil.isNotEmpty(payAmount) ? payAmount.divide(orderInfo.getOrderAmount(), 2, RoundingMode.HALF_UP).setScale(2, RoundingMode.HALF_DOWN) : null);
         orderInfo.setPayType(qpay);
         orderInfo.setUpdatedAt(System.currentTimeMillis());
@@ -592,7 +592,7 @@ public class PayService {
 
 
         orderInfo.setPayAmount(ObjectUtil.isEmpty(payAmount) ? orderInfo.getOrderAmount() : payAmount);
-        orderInfo.setDiscountAmount(ObjectUtil.isEmpty(discountAmount) ? BigDecimal.ZERO : discountAmount);
+        orderInfo.setDiscountAmount(ObjectUtil.isEmpty(discountAmount) ? null : discountAmount);
         orderInfo.setDiscountRatio(ObjectUtil.isNotEmpty(payAmount) ? payAmount.divide(orderInfo.getOrderAmount(), 2, RoundingMode.HALF_UP).setScale(2, RoundingMode.HALF_DOWN) : null);
         orderInfo.setStaffId(ObjectUtil.isEmpty(staff) ? null : staff.getId());
         orderInfo.setUserId(user.getUserId());
@@ -716,7 +716,7 @@ public class PayService {
         tbShopUserFlowMapper.insert(flow);
 
         orderInfo.setPayAmount(ObjectUtil.isEmpty(payAmount) ? orderInfo.getOrderAmount() : payAmount);
-        orderInfo.setDiscountAmount(ObjectUtil.isEmpty(discountAmount) ? BigDecimal.ZERO : discountAmount);
+        orderInfo.setDiscountAmount(ObjectUtil.isEmpty(discountAmount) ? null : discountAmount);
         orderInfo.setDiscountRatio(ObjectUtil.isNotEmpty(payAmount) ? payAmount.divide(orderInfo.getOrderAmount(), 2, RoundingMode.HALF_UP).setScale(2, RoundingMode.HALF_DOWN) : null);
         orderInfo.setStaffId(ObjectUtil.isEmpty(staff) ? null : staff.getId());
         orderInfo.setMemberId(user.getUserId());
@@ -897,7 +897,7 @@ public class PayService {
 
 
         orderInfo.setPayAmount(ObjectUtil.isEmpty(payAmount) ? orderInfo.getOrderAmount() : payAmount);
-        orderInfo.setDiscountAmount(ObjectUtil.isEmpty(discountAmount) ? BigDecimal.ZERO : discountAmount);
+        orderInfo.setDiscountAmount(ObjectUtil.isEmpty(discountAmount) ? null : discountAmount);
         orderInfo.setStaffId(ObjectUtil.isEmpty(staff) ? null : staff.getId());
         orderInfo.setDiscountRatio(ObjectUtil.isNotEmpty(payAmount) ? payAmount.divide(orderInfo.getOrderAmount(), 2, RoundingMode.HALF_UP).setScale(2, RoundingMode.HALF_DOWN) : null);
         orderInfo.setPayType("cash");
@@ -981,7 +981,7 @@ public class PayService {
 
 
         orderInfo.setPayAmount(ObjectUtil.isEmpty(payAmount) ? orderInfo.getOrderAmount() : payAmount);
-        orderInfo.setDiscountAmount(ObjectUtil.isEmpty(discountAmount) ? BigDecimal.ZERO : discountAmount);
+        orderInfo.setDiscountAmount(ObjectUtil.isEmpty(discountAmount) ? null : discountAmount);
         orderInfo.setStaffId(ObjectUtil.isEmpty(staff) ? null : staff.getId());
         orderInfo.setDiscountRatio(ObjectUtil.isNotEmpty(payAmount) ? payAmount.divide(orderInfo.getOrderAmount(), 2, RoundingMode.HALF_UP).setScale(2, RoundingMode.HALF_DOWN) : null);
         orderInfo.setPayType("cash");