diff --git a/pkg/pinger/config.go b/pkg/pinger/config.go
index 4239109055d..4b20fb1dc16 100644
--- a/pkg/pinger/config.go
+++ b/pkg/pinger/config.go
@@ -41,7 +41,7 @@ func ParseFlags() (*Configuration, error) {
 		argMode               = pflag.String("mode", "server", "server or job Mode")
 		argInternalDns        = pflag.String("internal-dns", "kubernetes.default", "check dns from pod")
 		argExternalDns        = pflag.String("external-dns", "alauda.cn", "check external dns resolve from pod")
-		argExternalAddress    = pflag.String("external-address", "114.114.114.114", "check ping connection to an external address, default empty that will disable external check")
+		argExternalAddress    = pflag.String("external-address", "114.114.114.114", "check ping connection to an external address, default: 114.114.114.114")
 		argNetworkMode        = pflag.String("network-mode", "kube-ovn", "The cni plugin current cluster used, default: kube-ovn")
 	)