diff --git a/app/Http/Requests/Admin/TutorialSave.php b/app/Http/Requests/Admin/TutorialSave.php
index fda69aa7..b1b0211e 100644
--- a/app/Http/Requests/Admin/TutorialSave.php
+++ b/app/Http/Requests/Admin/TutorialSave.php
@@ -8,7 +8,8 @@ class TutorialSave extends FormRequest
 {
     CONST RULES = [
         'title' => 'required',
-        'category' => 'required|in:windows,macos,ios,android,linux,router',
+        // 1:windows 2:macos 3:ios 4:android 5:linux 6:router
+        'category' => 'required|in:1,2,3,4,5,6',
         'description' => 'required',
         'icon' => 'required'
     ];
diff --git a/database/update.sql b/database/update.sql
index 41bbb016..bdecdca6 100644
--- a/database/update.sql
+++ b/database/update.sql
@@ -164,4 +164,4 @@ ALTER TABLE `v2_order`
 ADD `refund_amount` int(11) NULL COMMENT '退款金额' AFTER `surplus_amount`;
 
 ALTER TABLE `v2_tutorial`
-ADD `category` varchar(255) COLLATE 'utf8_general_ci' NOT NULL AFTER `description`;
+ADD `category_id` int(11) NOT NULL AFTER `id`;