diff --git a/app/Admin/Controllers/Activity/IndexController.php b/app/Admin/Controllers/Activity/IndexController.php
index 2debdb0..cfd093a 100644
--- a/app/Admin/Controllers/Activity/IndexController.php
+++ b/app/Admin/Controllers/Activity/IndexController.php
@@ -30,6 +30,7 @@ class IndexController extends AdminController
             $filter->column(1 / 2, function ($filter) {
                 $filter->equal('status', '状态')->select(Activity::STATUS);
                 $filter->equal('type', '类型')->select(Activity::TYPES);
+                $filter->equal('code', '活动编号');
             });
 
             $filter->column(1 / 2, function ($filter) {