diff --git a/kiri-engine/FileListen/HotReload.php b/kiri-engine/FileListen/HotReload.php
index afaacfc4..701572a6 100644
--- a/kiri-engine/FileListen/HotReload.php
+++ b/kiri-engine/FileListen/HotReload.php
@@ -98,7 +98,7 @@ class HotReload extends Command
 	public function healthCheck()
 	{
 		$pid = (int)file_get_contents(storage('.swoole.pid'));
-		$this->logger->debug('timer ticker.' . Process::kill($pid, 0));
+		$this->logger->debug('timer ticker.' . $pid . '.' . Process::kill($pid, 0));
 		if (!empty($pid) && !Process::kill($pid, 0)) {
 			if ($this->process && Process::kill($this->process->pid, 0)) {
 				echo 'service is shutdown you need reload.';