diff --git a/eladmin-system/src/main/java/cn/ysk/cashier/dto/shoptable/PayDTO.java b/eladmin-system/src/main/java/cn/ysk/cashier/dto/shoptable/PayDTO.java
index 74e34174..b54bfc51 100644
--- a/eladmin-system/src/main/java/cn/ysk/cashier/dto/shoptable/PayDTO.java
+++ b/eladmin-system/src/main/java/cn/ysk/cashier/dto/shoptable/PayDTO.java
@@ -4,10 +4,8 @@ import cn.ysk.cashier.dto.order.UserCouponInfoDTO;
 import lombok.Data;
 
 import javax.validation.Valid;
-import javax.validation.constraints.Max;
-import javax.validation.constraints.Min;
-import javax.validation.constraints.NotEmpty;
-import javax.validation.constraints.NotNull;
+import javax.validation.constraints.*;
+import java.math.BigDecimal;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -19,9 +17,9 @@ public class PayDTO {
     private Integer orderId;
     @NotEmpty
     private String payType;
-    @Min(0)
-    @Max(1)
-    private Double discount;
+    @DecimalMin("0")
+    @DecimalMax("1")
+    private BigDecimal discount;
     private Integer vipUserId;
     private String code;
     private String token;
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 f004ce74..56dace2c 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
@@ -365,12 +365,12 @@ public class TbPayServiceImpl implements TbPayService {
 //            return Result.fail(CodeEnum.PAYTYPENOEXIST);
 //        }
 
-        BigDecimal payMount = orderInfo.getOrderAmount().multiply(BigDecimal.valueOf(payDTO.getDiscount())).setScale(2, RoundingMode.HALF_UP);
+        BigDecimal payMount = orderInfo.getOrderAmount().multiply(payDTO.getDiscount()).setScale(2, RoundingMode.HALF_UP);
         orderInfo.setPayAmount(payMount);
         orderInfo.setPayType("cash");
         orderInfo.setStatus("closed");
         orderInfo.setPayOrderNo("cash".concat(SnowFlakeUtil.generateOrderNo()));
-        orderInfo.setDiscountRatio(BigDecimal.valueOf(payDTO.getDiscount()));
+        orderInfo.setDiscountRatio(payDTO.getDiscount());
         orderInfo.setDiscountAmount(orderInfo.getAmount().subtract(payMount));
         orderInfoMapper.updateById(orderInfo);
 
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 8630f22c..06fba60d 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
@@ -2131,7 +2131,7 @@ public class TbShopTableServiceImpl implements TbShopTableService {
         // 更新订单信息
         ShopEatTypeInfoDTO shopEatTypeInfoDTO = checkEatModel(orderInfo.getShopId(), orderInfo.getTableId());
         OrderPriceDTO priceDTO = createOrderDetailWithCoupon(activateCartInfo, orderInfo, payDTO.getShopId(), false, shopEatTypeInfoDTO);
-        BigDecimal finalAmount = priceDTO.getTotalAmount().multiply(BigDecimal.valueOf(payDTO.getDiscount())).setScale(2, RoundingMode.HALF_UP);
+        BigDecimal finalAmount = priceDTO.getTotalAmount().multiply(payDTO.getDiscount()).setScale(2, RoundingMode.HALF_UP);
 
         orderInfo.setUpdatedAt(System.currentTimeMillis());
         orderInfo.setSettlementAmount(finalAmount);
@@ -2177,7 +2177,7 @@ 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 = BigDecimal.valueOf(payDTO.getDiscount());
+        BigDecimal discount = payDTO.getDiscount();
         cashierCarts.forEach(item -> {
             item.setTotalAmount(item.getTotalAmount().multiply(discount).setScale(2, RoundingMode.HALF_UP));
 //            item.setSalePrice(item.getSalePrice().multiply(discount).setScale(2, RoundingMode.HALF_UP));
@@ -2194,10 +2194,10 @@ public class TbShopTableServiceImpl implements TbShopTableService {
         mpCashierCartService.updateBatchById(cashierCarts);
         mpOrderDetailService.updateBatchById(detailList);
         BigDecimal oldAmount = orderInfo.getOrderAmount();
-        BigDecimal finalAmount = orderInfo.getOrderAmount().multiply(BigDecimal.valueOf(payDTO.getDiscount())).setScale(2, RoundingMode.HALF_UP);
+        BigDecimal finalAmount = orderInfo.getOrderAmount().multiply(payDTO.getDiscount()).setScale(2, RoundingMode.HALF_UP);
         BigDecimal discountAmount = oldAmount.subtract(finalAmount);
         orderInfo.setDiscountAmount(discountAmount);
-        orderInfo.setDiscountRatio(BigDecimal.valueOf(payDTO.getDiscount()));
+        orderInfo.setDiscountRatio(payDTO.getDiscount());
         orderInfo.setOrderAmount(finalAmount);
         orderInfo.setAmount(finalAmount);
         orderInfo.setSettlementAmount(finalAmount);
@@ -2234,12 +2234,12 @@ public class TbShopTableServiceImpl implements TbShopTableService {
             }
 
             if (payDTO.getDiscount() == null) {
-                payDTO.setDiscount((double) 1);
+                payDTO.setDiscount(new BigDecimal("1"));
             }
 
             BigDecimal finalAmount = null;
             // 计算订单折扣信息
-            if (payDTO.getDiscount() != 1) {
+            if (payDTO.getDiscount().compareTo(new BigDecimal("1")) != 0) {
                 finalAmount = resetAmountByDiscount(payDTO, orderInfo);
             }else {
                 finalAmount = orderInfo.getOrderAmount();