diff --git a/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/app/mapper/BackReceiveMapper.java b/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/app/mapper/BackReceiveMapper.java
index f5113b0..6f35191 100644
--- a/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/app/mapper/BackReceiveMapper.java
+++ b/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/app/mapper/BackReceiveMapper.java
@@ -30,9 +30,9 @@ public interface BackReceiveMapper {
      * @param record 查询条件
      * @return List<BackApplyInfo>
      */
-    List<BackApplyInfo> receiveView(BackApplyInfo record);
+    List<BackApplyInfo> receiveView4FrontEnd(BackApplyInfo record);
 
-    List<BackApplyInfo> receiveView2(BackApplyInfo record);
+    List<BackApplyInfo> receiveView4Backend(BackApplyInfo record);
 
     /**
     * 添加接收数据back_check_details
diff --git a/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/app/service/impl/BackReceiveServiceImpl.java b/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/app/service/impl/BackReceiveServiceImpl.java
index 2e706d0..2c8bf27 100644
--- a/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/app/service/impl/BackReceiveServiceImpl.java
+++ b/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/app/service/impl/BackReceiveServiceImpl.java
@@ -44,7 +44,7 @@ public class BackReceiveServiceImpl implements BackReceiveService {
 
     @Override
     public List<BackApplyInfo> receiveView(BackApplyInfo record) {
-        List<BackApplyInfo> backApplyInfoList = backReceiveMapper.receiveView(record);
+        List<BackApplyInfo> backApplyInfoList = backReceiveMapper.receiveView4FrontEnd(record);
         int count1 = 0;
         int count2 = 0;
         for (BackApplyInfo backApplyInfo : backApplyInfoList) {
@@ -169,7 +169,7 @@ public class BackReceiveServiceImpl implements BackReceiveService {
             throw new RuntimeException("该退料单已完成退料");
         }
         //修改任务状态
-        List<BackApplyInfo> list = backReceiveMapper.receiveView2(record);
+        List<BackApplyInfo> list = backReceiveMapper.receiveView4Backend(record);
         if (!CollectionUtils.isEmpty(list)) {
             for (BackApplyInfo backApplyInfo : list) {
                 maxBackNum += (int) backApplyInfo.getMaxBackNum();
diff --git a/sgzb-modules/sgzb-material/src/main/resources/mapper/app/BackReceiveMapper.xml b/sgzb-modules/sgzb-material/src/main/resources/mapper/app/BackReceiveMapper.xml
index 5930e32..d688661 100644
--- a/sgzb-modules/sgzb-material/src/main/resources/mapper/app/BackReceiveMapper.xml
+++ b/sgzb-modules/sgzb-material/src/main/resources/mapper/app/BackReceiveMapper.xml
@@ -659,7 +659,7 @@
       bai.create_time DESC
   </select>
 
-  <select id="receiveView" resultType="com.bonus.sgzb.base.api.domain.BackApplyInfo">
+  <select id="receiveView4FrontEnd" resultType="com.bonus.sgzb.base.api.domain.BackApplyInfo">
     SELECT
       bai.id,
       bai.task_id as taskId,
@@ -672,7 +672,7 @@
       bad.pre_num as preNum,
       bad.audit_num as auditNum,
       bad.status as status,
-      IFNULL(sai.num, 0)-IFNULL(aa.back_num,0) as max_back_num,
+      CASE WHEN (IFNULL(sai.num, 0)-IFNULL(aa.back_num,0)) &lt; 0 THEN 0 ELSE (IFNULL(sai.num, 0)-IFNULL(aa.back_num,0)) END as max_back_num,
       IFNULL(aa.back_num,0) as in_completed_back_num,
       IFNULL(bb.finished_back_num, 0) as finished_back_num,
       mt.manage_type as manageType,
@@ -717,7 +717,7 @@
       </if>
   </select>
 
-  <select id="receiveView2" resultType="com.bonus.sgzb.base.api.domain.BackApplyInfo">
+  <select id="receiveView4Backend" resultType="com.bonus.sgzb.base.api.domain.BackApplyInfo">
     SELECT
     bai.id,
     bai.task_id as taskId,
@@ -730,7 +730,7 @@
     bad.pre_num as preNum,
     bad.audit_num as auditNum,
     bad.status as status,
-    IFNULL(sai.num, 0)-IFNULL(aa.back_num,0) as max_back_num,
+    IFNULL(sai.num, 0) as max_back_num,
     IFNULL(aa.back_num,0) as in_completed_back_num,
     IFNULL(bb.finished_back_num, 0) as finished_back_num,
     mt.manage_type as manageType,