diff --git a/servers/boe-server-all/src/main/java/com/xboe/module/teacher/service/impl/TeacherServiceImpl.java b/servers/boe-server-all/src/main/java/com/xboe/module/teacher/service/impl/TeacherServiceImpl.java
index 0b596640..e27484bd 100644
--- a/servers/boe-server-all/src/main/java/com/xboe/module/teacher/service/impl/TeacherServiceImpl.java
+++ b/servers/boe-server-all/src/main/java/com/xboe/module/teacher/service/impl/TeacherServiceImpl.java
@@ -206,7 +206,8 @@ public class TeacherServiceImpl implements ITeacherService {
 
     @Override
     public void updateTeacher(Teacher entity) {
-        dao.update(entity);
+        Teacher teacher = dao.get(entity.getId());
+        dao.update(teacher);
     }
 
     @Override