diff --git a/share-model/src/main/resources/mapper/glcc/GlccMediumTermExamineMaterialMapper.xml b/share-model/src/main/resources/mapper/glcc/GlccMediumTermExamineMaterialMapper.xml
index 0e0c466..6052378 100644
--- a/share-model/src/main/resources/mapper/glcc/GlccMediumTermExamineMaterialMapper.xml
+++ b/share-model/src/main/resources/mapper/glcc/GlccMediumTermExamineMaterialMapper.xml
@@ -215,7 +215,7 @@
     <select id="getpageFinalBackendInfoListWithResult" resultType="com.xjy.ai.model.service.glcc.vo.MediumTermExamineBackendWithResultVo">
 
         select * from (
-        select a.defence_video_url,b.student_name, b.mail as student_email,b.phone as student_phone, null created_on,null is_authed,
+        select '' defence_video_url,b.student_name, b.mail as student_email,b.phone as student_phone, null created_on,null is_authed,
         '' PPT_attachment_id, '' code_or_pr_url,e.tutor_name,e.tutor_mail,e.tutor_phone, e.task_name,a.task_id,e.project_name,
         e.project_intro, '' totality_evaluation,'' comment, 2 submit_status,2 evaluate_status
         from glcc_medium_term_examine_material as a