diff --git a/eladmin-system/src/main/java/cn/ysk/cashier/dto/product/TbProductGroupDto.java b/eladmin-system/src/main/java/cn/ysk/cashier/dto/product/TbProductGroupDto.java
index c377e6a6..3c6d5e75 100644
--- a/eladmin-system/src/main/java/cn/ysk/cashier/dto/product/TbProductGroupDto.java
+++ b/eladmin-system/src/main/java/cn/ysk/cashier/dto/product/TbProductGroupDto.java
@@ -1,24 +1,10 @@
-/*
-*  Copyright 2019-2020 Zheng Jie
-*
-*  Licensed under the Apache License, Version 2.0 (the "License");
-*  you may not use this file except in compliance with the License.
-*  You may obtain a copy of the License at
-*
-*  http://www.apache.org/licenses/LICENSE-2.0
-*
-*  Unless required by applicable law or agreed to in writing, software
-*  distributed under the License is distributed on an "AS IS" BASIS,
-*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-*  See the License for the specific language governing permissions and
-*  limitations under the License.
-*/
 package cn.ysk.cashier.dto.product;
 
 import lombok.Data;
 
-import javax.persistence.Column;
 import java.io.Serializable;
+import java.time.LocalTime;
+import java.time.format.DateTimeFormatter;
 import java.util.List;
 
 /**
@@ -68,4 +54,15 @@ public class TbProductGroupDto implements Serializable {
     private String saleStartTime;
 
     private String saleEndTime;
+
+    public void upSaleEndTime() {
+        if (useTime != null && useTime == 1) {
+            DateTimeFormatter formatter = DateTimeFormatter.ofPattern("HH:mm");
+            LocalTime startTime = LocalTime.parse(saleStartTime, formatter);
+            LocalTime endTime = LocalTime.parse(saleEndTime, formatter);
+            if (endTime.isBefore(startTime)) {
+                saleEndTime = "次日 " + saleEndTime;
+            }
+        }
+    }
 }
\ No newline at end of file
diff --git a/eladmin-system/src/main/java/cn/ysk/cashier/service/impl/productimpl/TbProductGroupServiceImpl.java b/eladmin-system/src/main/java/cn/ysk/cashier/service/impl/productimpl/TbProductGroupServiceImpl.java
index 3ada4abc..0b4215bd 100644
--- a/eladmin-system/src/main/java/cn/ysk/cashier/service/impl/productimpl/TbProductGroupServiceImpl.java
+++ b/eladmin-system/src/main/java/cn/ysk/cashier/service/impl/productimpl/TbProductGroupServiceImpl.java
@@ -58,8 +58,11 @@ public class TbProductGroupServiceImpl implements TbProductGroupService {
         PageRequest sort = PageRequest.of(pageable.getPageNumber(), pageable.getPageSize(), Sort.by("sort"));
         Page<TbProductGroup> page = tbProductGroupRepository.findAll((root, criteriaQuery, criteriaBuilder) ->
                 QueryHelp.getPredicate(root,criteria,criteriaBuilder),sort);
-
-        return PageUtil.toPage(page.map(tbProductGroupMapper::toDto));
+        Page<TbProductGroupDto> map = page.map(tbProductGroupMapper::toDto);
+        map.getContent().forEach(s->{
+            s.upSaleEndTime();
+        });
+        return PageUtil.toPage(map);
     }
 
     @Override