diff --git a/application/api/model/UserData.php b/application/api/model/UserData.php
index 99bc3294..6b691ecd 100644
--- a/application/api/model/UserData.php
+++ b/application/api/model/UserData.php
@@ -255,6 +255,10 @@ class UserData extends Model
             return ['code' => 0, 'msg' => '登录失效，请重新登录','data' =>null];
         }
 
+        $old_password = db::name('user')->where('id' , $user_id)->value('password');
+        if ($old_password == md5($password)) {
+            return ['code' => 0, 'msg' => '修改失败了！','data' =>null];
+        }
         $reslut = db::name('user')->where('id' , $user_id)->update(['password' => md5($password)]);
 
         if ($reslut) {