diff --git a/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/material/controller/BackApplyController.java b/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/material/controller/BackApplyController.java
index 86660fd..74118d0 100644
--- a/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/material/controller/BackApplyController.java
+++ b/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/material/controller/BackApplyController.java
@@ -169,6 +169,10 @@ public class BackApplyController extends BaseController {
             return AjaxResult.error("参数错误");
         }
         try {
+            //查看本次退料申请是否合法
+            if (!backApplyService.isBackApplyNumberCorrect(bean)) {
+                return AjaxResult.error("已申请退料数量加上本次退料申请数量，超过领料出库数量，请重试!");
+            }
             //生成退料编码
             String code = backApplyService.genderBackCode();
             if (StringUtils.isEmpty(code)) {
diff --git a/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/material/mapper/BackApplyMapper.java b/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/material/mapper/BackApplyMapper.java
index 1526f05..ef9b4ec 100644
--- a/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/material/mapper/BackApplyMapper.java
+++ b/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/material/mapper/BackApplyMapper.java
@@ -40,6 +40,8 @@ public interface BackApplyMapper {
      */
     String selectTaskNumByMonth(@Param("date") Date date, @Param("taskType") Integer taskType);
 
+    List<BackApplyInfo> getBackApplyDetailsTypeCount();
+
     /**
      * 增加
      * @param bean
diff --git a/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/material/service/BackApplyService.java b/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/material/service/BackApplyService.java
index e1a2192..c588e19 100644
--- a/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/material/service/BackApplyService.java
+++ b/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/material/service/BackApplyService.java
@@ -30,6 +30,8 @@ public interface BackApplyService {
      */
     List<BackApplyInfo> getMaterialList(BackApplyInfo bean);
 
+    public boolean isBackApplyNumberCorrect(BackApplyInfo bean);
+
     /**
      * 生成后台退料编号
      * @return
diff --git a/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/material/service/impl/BackApplyServiceImpl.java b/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/material/service/impl/BackApplyServiceImpl.java
index 02ebde8..a59aed2 100644
--- a/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/material/service/impl/BackApplyServiceImpl.java
+++ b/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/material/service/impl/BackApplyServiceImpl.java
@@ -85,6 +85,22 @@ public class BackApplyServiceImpl implements BackApplyService {
         return backApplyMapper.getMaterialList(bean);
     }
 
+    @Override
+    public boolean isBackApplyNumberCorrect(BackApplyInfo bean) {
+        boolean isCorrect = true; //默认合法
+        // 查看出库数据
+        List<BackApplyInfo> backTypeList = backApplyMapper.getBackApplyDetailsTypeCount();
+
+        // 查看退料已审核数据
+
+
+        // 比较本次退料数据，是否大于前两者的差额，大于就报错
+        List<BackApplyInfo> backApplyDetails = bean.getBackApplyDetails();
+
+
+        return isCorrect;
+    }
+
     @Override
     public String genderBackCode() {
         SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMdd");
diff --git a/sgzb-modules/sgzb-material/src/main/resources/mapper/material/BackApplyMapper.xml b/sgzb-modules/sgzb-material/src/main/resources/mapper/material/BackApplyMapper.xml
index 3d78dc1..4cc4b50 100644
--- a/sgzb-modules/sgzb-material/src/main/resources/mapper/material/BackApplyMapper.xml
+++ b/sgzb-modules/sgzb-material/src/main/resources/mapper/material/BackApplyMapper.xml
@@ -529,6 +529,16 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         ORDER BY create_time DESC LIMIT 1
     </select>
 
+    <select id="getBackApplyDetailsTypeCount" resultType="com.bonus.sgzb.base.api.domain.BackApplyInfo">
+        select bad.type_id as typeId, sum(bad.audit_num) as backNum
+        from back_apply_details bad
+                 LEFT join back_apply_info bai on bai.id = bad.parent_id
+                 LEFT join tm_task tt on bai.task_id = tt.task_id
+                 LEFT join tm_task_agreement tta on tta.task_id = tt.task_id
+        where tta.agreement_id = #{agreementId}
+        group by bad.type_id
+    </select>
+
     <select id="getView" resultType="com.bonus.sgzb.base.api.domain.BackApplyInfo">
         SELECT
             bai.back_person AS backPerson,
@@ -950,5 +960,4 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         (SELECT * FROM back_apply_info bai2 WHERE bai2.id = #{id}) dd
         on bai1.task_id = dd.task_id
     </select>
-
 </mapper>
\ No newline at end of file