diff --git a/web-infrastructure/src/main/resources/mapper/study/StudentMapper.xml b/web-infrastructure/src/main/resources/mapper/study/StudentMapper.xml
index f43c5d8..a26687e 100644
--- a/web-infrastructure/src/main/resources/mapper/study/StudentMapper.xml
+++ b/web-infrastructure/src/main/resources/mapper/study/StudentMapper.xml
@@ -314,6 +314,7 @@
         and c.delete_enum = 'FALSE'
         and c.state != 1
         left join user u on u.phone = s.phone and u.delete_enum = 'FALSE'
+        left join teacher t on t.id = c.teacher_id
         left join user tea on c.teacher_id = tea.id and tea.delete_enum = 'FALSE'
         <where>
             s.delete_enum = 'FALSE'