diff --git a/app/adminapi/validate/works/rlzy/OaDepartmentChangeValidate.php b/app/adminapi/validate/works/rlzy/OaDepartmentChangeValidate.php
index b0220c338..a08224cf0 100644
--- a/app/adminapi/validate/works/rlzy/OaDepartmentChangeValidate.php
+++ b/app/adminapi/validate/works/rlzy/OaDepartmentChangeValidate.php
@@ -35,7 +35,7 @@ class OaDepartmentChangeValidate extends BaseValidate
         'id' => 'require|checkData',
         'uid' => 'require',
         'from_did' => 'require',
-        'to_did' => 'require',
+        'to_did' => 'require|different:from_did',
         'move_time' => 'require|dateFormat:Y-m-d',
     ];