diff --git a/migrations/2020_11_04_153616_create_users_group_table.php b/migrations/2020_11_04_153616_create_users_group_table.php
index eb60d8e..8ff01f2 100644
--- a/migrations/2020_11_04_153616_create_users_group_table.php
+++ b/migrations/2020_11_04_153616_create_users_group_table.php
@@ -4,6 +4,7 @@ use Hyperf\Database\Schema\Schema;
 use Hyperf\Database\Schema\Blueprint;
 use Hyperf\Database\Migrations\Migration;
 use Hyperf\DbConnection\Db;
+
 class CreateUsersGroupTable extends Migration
 {
     /**
@@ -18,9 +19,25 @@ class CreateUsersGroupTable extends Migration
             $table->string('group_profile', 100)->default('')->comment('群介绍');
             $table->tinyInteger('status')->default(0)->comment('群状态[0:正常;1:已解散]');
             $table->string('avatar', 255)->default('')->comment('群头像');
+
+            //预留字段
+            //$table->string('invite_mode', 255)->default(0)->comment('邀请方式[0:全员邀请;1:全员邀请需群主确认;2:仅群主可邀请;]');
+
             $table->dateTime('created_at')->nullable()->comment('创建时间');
         });
 
+        // 预留表(后期邀请入群需同意后进入)
+        /*
+        Schema::create('users_group_invite', function (Blueprint $table) {
+            $table->unsignedInteger('id', true)->comment('自增ID');
+            $table->unsignedInteger('record_id')->default(0)->comment('消息记录ID');
+            $table->unsignedInteger('group_id')->default(0)->comment('群ID');
+            $table->unsignedInteger('user_id', 30)->default(0)->comment('用户ID');
+            $table->tinyInteger('status')->default(0)->comment('邀请状态[0:等待同意;1:已同意;2:拒绝邀请]');
+            $table->dateTime('created_at')->nullable()->comment('创建时间');
+        });
+        */
+
         $prefix = config('databases.default.prefix');
         DB::statement("ALTER TABLE `{$prefix}users_group` comment '用户聊天群'");
     }