diff --git a/iptables-helper.service b/iptables-helper.service
index db5cf55..30472d2 100644
--- a/iptables-helper.service
+++ b/iptables-helper.service
@@ -4,9 +4,13 @@ After=network.target
 
 [Service]
 Environment="HOME=/root"
-ExecStartPre=iptables-restore /etc/iptables.rule
+WorkingDirectory=/opt/iptables-helper
+ExecStartPre=sh -c "[ -f /etc/iptables.rule ] && iptables-restore /etc/iptables.rule || exit 0;"
 ExecStart=/opt/iptables-helper/iptables-helper
+ExecStartPost=sh -c "iptables-save | tee /etc/iptables.rule > /dev/null"
 Restart=on-failure
+KillMode=process
+RestartSec=5s
 
 [Install]
 WantedBy=multi-user.target
\ No newline at end of file
diff --git a/pkg/utils/iptables/handler.go b/pkg/utils/iptables/handler.go
index 9939c14..6316bdc 100644
--- a/pkg/utils/iptables/handler.go
+++ b/pkg/utils/iptables/handler.go
@@ -80,7 +80,7 @@ func DelRuleByCmd(cmd string) error {
 }
 
 func SaveRule() {
-	cmd := "sh -c \"iptables-save | tee /etc/iptables.rule\""
+	cmd := "sh -c \"iptables-save | tee /etc/iptables.rule > /dev/null\""
 	commander := command.Commander{}
 	commander.Execute("sudo " + cmd)
 }