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 7ff0787d..0e1c3a81 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
@@ -319,9 +319,12 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         (select id FROM back_apply_info
         WHERE task_id in (SELECT task_id FROM back_apply_info WHERE id = #{id}));
 
-        DELETE
+        DELETE bai1
+        FROM back_apply_info bai1
+        JOIN (
+        SELECT task_id
         FROM back_apply_info
-        WHERE task_id in (SELECT task_id FROM back_apply_info WHERE id = #{id});
+        WHERE id = #{id}) bai2 ON bai1.task_id = bai2.task_id;
 
     </delete>