diff --git a/HttpServer/Events/OnShutdown.php b/HttpServer/Events/OnShutdown.php
index 06a91481..b59533b0 100644
--- a/HttpServer/Events/OnShutdown.php
+++ b/HttpServer/Events/OnShutdown.php
@@ -15,6 +15,7 @@ use Snowflake\Event;
 use Snowflake\Exception\ComponentException;
 use Snowflake\Exception\ConfigException;
 use Snowflake\Snowflake;
+use Swoole\Coroutine;
 use Swoole\Server;
 use Closure;
 
@@ -32,7 +33,7 @@ class OnShutdown extends Callback
 	 */
 	public function onHandler(Server $server)
 	{
-		$this->system_mail('server shutdown~');
+		Coroutine::create([$this,'system_mail'],'server shutdown~');
 		$event = Snowflake::app()->getEvent();
 		if (!$event->exists(Event::SERVER_SHUTDOWN)) {
 			return;
diff --git a/HttpServer/Events/OnWorkerError.php b/HttpServer/Events/OnWorkerError.php
index e00aeb54..6bf7aa3f 100644
--- a/HttpServer/Events/OnWorkerError.php
+++ b/HttpServer/Events/OnWorkerError.php
@@ -8,6 +8,7 @@ use Exception;
 use HttpServer\Abstracts\Callback;
 use Snowflake\Abstracts\Config;
 use Snowflake\Exception\ConfigException;
+use Swoole\Coroutine;
 use Swoole\Server;
 
 class OnWorkerError extends Callback
@@ -27,7 +28,7 @@ class OnWorkerError extends Callback
 		if (!Config::has('email')) {
 			return;
 		}
-		$this->system_mail(print_r([
+		Coroutine::create([$this,'system_mail'],print_r([
 			'$worker_pid' => $worker_pid,
 			'$worker_id'  => $worker_id,
 			'$exit_code'  => $exit_code,