diff --git a/sgzb-api/sgzb-api-system/src/main/java/com/bonus/sgzb/base/api/domain/BackApplyInfo.java b/sgzb-api/sgzb-api-system/src/main/java/com/bonus/sgzb/base/api/domain/BackApplyInfo.java
index 101a712..f29b83f 100644
--- a/sgzb-api/sgzb-api-system/src/main/java/com/bonus/sgzb/base/api/domain/BackApplyInfo.java
+++ b/sgzb-api/sgzb-api-system/src/main/java/com/bonus/sgzb/base/api/domain/BackApplyInfo.java
@@ -286,6 +286,11 @@ public class BackApplyInfo extends BaseEntity {
      */
     private String finishedBackNum;
 
+    /**
+     * 此协议号最大剩余退料数
+     */
+    private String maxBackNum;
+
     @ApiModelProperty(value = "详情id和数量")
     private String detailsIdByNum;
 
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 a4047b9..17c8332 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
@@ -672,15 +672,18 @@
       bad.pre_num as preNum,
       bad.audit_num as auditNum,
       bad.status as status,
+      IFNULL(sai.num, 0) as max_back_num,
       IFNULL(bad.audit_num,0)-IFNULL(aa.back_num,0) as num,
+      IFNULL(bb.finished_back_num, 0) as finished_back_num,
       mt.manage_type as manageType,
-      bb.finished_back_num,
       mtk.user_id,
       CONCAT('NSJJ',mt.`code`,mt.model_code) as `code`
     FROM
       back_apply_details bad
         LEFT JOIN back_apply_info bai on bai.id=bad.parent_id
         LEFT JOIN tm_task_agreement tta on tta.task_id=bai.task_id
+        LEFT JOIN (select agreement_id, sum(IFNULL(num, 0)) as num from slt_agreement_info where status=0
+            group by agreement_id) sai on tta.agreement_id=sai.agreement_id
         LEFT JOIN ma_type mt on mt.type_id=bad.type_id
         LEFT JOIN ma_type mt2 ON mt2.type_id=mt.parent_id
         LEFT JOIN ma_type_keeper mtk on mt.type_id=mtk.type_id