diff --git a/System/Crontab/Crontab.php b/System/Crontab/Crontab.php
index e52a8263..5c26ccc2 100644
--- a/System/Crontab/Crontab.php
+++ b/System/Crontab/Crontab.php
@@ -183,6 +183,10 @@ abstract class Crontab extends BaseObject
 	private function recover()
 	{
 		$redis = Snowflake::app()->getRedis();
+		if (!$redis->exists('stop:crontab:' . $this->getName())) {
+			$redis->del('stop:crontab:' . $this->getName());
+			return;
+		}
 
 		$redis->set('crontab:' . ($name = $this->getName()), swoole_serialize($this));
 
diff --git a/System/Crontab/Producer.php b/System/Crontab/Producer.php
index c1805092..28ded719 100644
--- a/System/Crontab/Producer.php
+++ b/System/Crontab/Producer.php
@@ -52,6 +52,8 @@ class Producer extends Component
 	{
 		$redis = Snowflake::app()->getRedis();
 
+		$redis->setex('stop:crontab:' . md5($name), 120, 1);
+
 		$redis->zRem(self::CRONTAB_KEY, $name);
 		$redis->del('crontab:' . md5($name));
 	}