diff --git a/database/migrations/20180928122842_rbac.php b/database/migrations/20180928122842_rbac.php
index 4808f43..7f52862 100644
--- a/database/migrations/20180928122842_rbac.php
+++ b/database/migrations/20180928122842_rbac.php
@@ -34,14 +34,14 @@ class Rbac extends Migrator
 
     public function up()
 	{
-		$table = $this->table(config('permissions.table.role'), [ 'engine'=>'InnoDB']);
+		$table = $this->table(config('permissions.table.role'), [ 'engine'=>'InnoDB', 'comment' => '角色表']);
 		$table->addColumn('name', 'string',['limit' => 50, 'default'=>'','comment'=>'角色名称'])
 						->addColumn('created_at', 'timestamp', ['default' => 'CURRENT_TIMESTAMP', 'comment' => '创建时间'])
 						->addColumn('updated_at', 'timestamp', [ 'comment' => '更新时间'])
 						->addIndex(['name'], ['unique' => true])
 						->create();
 
-		$table = $this->table(config('permissions.table.permission'), ['engine' => 'InnoDB']);
+		$table = $this->table(config('permissions.table.permission'), ['engine' => 'InnoDB', 'comment' => '权限菜单']);
 		$table->addColumn('name', 'string',['limit' => 50, 'default'=>'','comment'=>'菜单名称'])
 			  ->addColumn('icon', 'string', ['limit' => 50, 'default'=>'', 'comment'=>'菜单图标'])
 			  ->addColumn('pid', 'integer', ['limit' => MysqlAdapter::INT_SMALL, 'comment'=>'父级菜单ID'])
@@ -54,12 +54,12 @@ class Rbac extends Migrator
 			  ->addIndex(['name'], ['unique' => true])
 			  ->create();
 
-		$table = $this->table(config('permissions.table.user_has_roles'), ['engine' => 'InnoDB', 'identity' => true]);
+		$table = $this->table(config('permissions.table.user_has_roles'), ['engine' => 'InnoDB', 'identity' => true, 'comment' => '用户角色关联']);
 		$table->addColumn('uid', 'integer',['limit' => 11, 'comment'=>'用户ID'])
 			  ->addColumn('role_id', 'integer', [ 'comment' => '角色ID'])
 			  ->create();
 
-		$table = $this->table(config('permissions.table.role_has_permissions'), ['engine' => 'InnoDB', 'identity' => true]);
+		$table = $this->table(config('permissions.table.role_has_permissions'), ['engine' => 'InnoDB', 'identity' => true, 'comment' => '角色权限关联']);
 		$table->addColumn('role_id', 'integer',['limit' => 11, 'comment'=>'角色ID'])
 			  ->addColumn('permission_id', 'integer', [ 'comment' => '权限ID'])
 			  ->create();
diff --git a/database/migrations/20181112081014_users.php b/database/migrations/20181112081014_users.php
index 42753f4..42e295d 100644
--- a/database/migrations/20181112081014_users.php
+++ b/database/migrations/20181112081014_users.php
@@ -28,7 +28,7 @@ class Users extends Migrator
      */
     public function change()
     {
-	    $table = $this->table('users', ['engine' => 'InnoDB']);
+	    $table = $this->table('users', ['engine' => 'InnoDB', 'comment' => '用户表']);
 	    $table->addColumn('name', 'string',['limit' => 50, 'default'=>'','comment'=>'用户名'])
 		    ->addColumn('email', 'string',['limit' => 255, 'default'=>'','comment'=>'邮箱'])
 		    ->addColumn('password', 'string',['limit' => 255, 'default'=>'','comment'=>'密码'])
diff --git a/database/migrations/20190117094442_log.php b/database/migrations/20190117094442_log.php
index bf25264..b42a5fe 100644
--- a/database/migrations/20190117094442_log.php
+++ b/database/migrations/20190117094442_log.php
@@ -30,7 +30,7 @@ class Log extends Migrator
     public function change()
     {
 
-        $table = $this->table('option_log', ['engine' => 'InnoDB']);
+        $table = $this->table('option_log', ['engine' => 'InnoDB', 'comment' => '操作日志表']);
         $table->addColumn('user_name', 'string',['limit' => 50, 'default'=>'','comment'=>'用户名'])
             ->addColumn('user_id', 'integer', ['limit' => MysqlAdapter::INT_REGULAR, 'comment' => '用户ID'])
             ->addColumn('module', 'string',['limit' => 20, 'default'=>'','comment'=>'模块'])