diff --git a/database/migrations/20190425073802_admin_app.php b/database/migrations/20190425073802_admin_app.php
index fc48922..e775c5b 100644
--- a/database/migrations/20190425073802_admin_app.php
+++ b/database/migrations/20190425073802_admin_app.php
@@ -63,6 +63,6 @@ class AdminApp extends Migrator {
             'null'    => true
         ])->addIndex(['app_id'], ['unique' => true])->create();
 
-        $table->changeColumn('id', null, ['signed' => false]);
+        $table->changeColumn('id', 'integer', ['signed' => false]);
     }
 }
diff --git a/database/migrations/20190425094427_admin_app_group.php b/database/migrations/20190425094427_admin_app_group.php
index 6314902..11c5074 100644
--- a/database/migrations/20190425094427_admin_app_group.php
+++ b/database/migrations/20190425094427_admin_app_group.php
@@ -45,6 +45,6 @@ class AdminAppGroup extends Migrator {
             'comment' => '组标识'
         ])->create();
 
-        $table->changeColumn('id', null, ['signed' => false]);
+        $table->changeColumn('id', 'integer', ['signed' => false]);
     }
 }
diff --git a/database/migrations/20190508070533_admin_auth_group.php b/database/migrations/20190508070533_admin_auth_group.php
new file mode 100644
index 0000000..8598c6f
--- /dev/null
+++ b/database/migrations/20190508070533_admin_auth_group.php
@@ -0,0 +1,47 @@
+<?php
+
+use think\migration\Migrator;
+use think\migration\db\Column;
+
+class AdminAuthGroup extends Migrator {
+    /**
+     * Change Method.
+     *
+     * Write your reversible migrations using this method.
+     *
+     * More information on writing migrations is available here:
+     * http://docs.phinx.org/en/latest/migrations.html#the-abstractmigration-class
+     *
+     * The following commands can be used in this method and Phinx will
+     * automatically reverse them when rolling back:
+     *
+     *    createTable
+     *    renameTable
+     *    addColumn
+     *    renameColumn
+     *    addIndex
+     *    addForeignKey
+     *
+     * Remember to call "create()" or "update()" and NOT "save()" when working
+     * with the Table class.
+     */
+    public function change() {
+        $table = $this->table('admin_auth_group', [
+            'comment' => '权限组'
+        ])->setCollation('utf8mb4_general_ci');
+        $table->addColumn('name', 'string', [
+            'limit'   => 50,
+            'default' => '',
+            'comment' => '组名称'
+        ])->addColumn('description', 'text', [
+            'comment' => '组描述',
+            'null'    => true
+        ])->addColumn('status', 'integer', [
+            'limit'   => 2,
+            'default' => 1,
+            'comment' => '组状态：为1正常，为0禁用'
+        ])->create();
+
+        $table->changeColumn('id', 'integer', ['signed' => false]);
+    }
+}