.

soss-system/src/main/java/com/soss/system/service/impl/CouponUserServiceImpl.java

@@ -210,7 +210,7 @@ public class CouponUserServiceImpl implements ICouponUserService {
                     couponVo.setNotFitableDesc("未达到满减要求");
                     return;
                 }
-                couponVo.setCouponAmount(couponVo.getPriceDiscount().min(orderTotalAmount));
+                couponVo.setCouponAmount(couponVo.getPriceDiscount().min(orderTotalOrigDiscount));
             } else {
                 List<OrderDetail> fitOrderDetails = orderDetails.stream().filter(orderDetail -> fitCouponGoodsIdList.contains(orderDetail.getGoodsId())).collect(Collectors.toList());
                 BigDecimal fitGoodsAmount = fitOrderDetails.stream().map(OrderDetail::getAmountShould).reduce(BigDecimal.ZERO, BigDecimal::add);