diff --git a/ucloud/host/main.py b/ucloud/host/main.py
index f25a984..88dfb7c 100755
--- a/ucloud/host/main.py
+++ b/ucloud/host/main.py
@@ -21,7 +21,7 @@ def update_heartbeat(hostname):
     while True:
         this_host.update_heartbeat()
         host_pool.put(this_host)
-        time.sleep(3)
+        time.sleep(10)
 
 
 def maintenance(host):