diff --git a/cert/cert_cmd.go b/cert/cert_cmd.go
index d00905424..b838251d3 100644
--- a/cert/cert_cmd.go
+++ b/cert/cert_cmd.go
@@ -1,7 +1,13 @@
 package cert
 
+import "fmt"
+
 // return sealos cert command
-func CertCMD(altNames []string, hostIP, serviceCIRD string) string{
-	// TODO
-	return ""
+func CertCMD(altNames []string, hostIP, hostName, serviceCIRD string) string{
+	cmd := fmt.Sprintf("sealos cert --node-ip %s --node-name %s --service-cird",hostIP,hostName)
+	for _,name := range altNames{
+		cmd += fmt.Sprintf(" --alt-names %s",name)
+	}
+
+	return cmd
 }
diff --git a/cmd/cert.go b/cmd/cert.go
index 09cddfab2..e97b6f5e2 100644
--- a/cmd/cert.go
+++ b/cmd/cert.go
@@ -51,7 +51,7 @@ func init() {
 
 	cleanCmd.Flags().StringSliceVar(&config.AltNames, "alt-names", []string{}, "like sealyun.com or 10.103.97.2")
 	cleanCmd.Flags().StringVar(&config.NodeName, "node-name", "", "like master0")
-	cleanCmd.Flags().StringVar(&config.ServiceCIRD, "serviceCIRD", "", "like 10.103.97.2/24")
+	cleanCmd.Flags().StringVar(&config.ServiceCIRD, "service-cird", "", "like 10.103.97.2/24")
 	cleanCmd.Flags().StringVar(&config.NodeIP, "node-ip", "", "like 10.103.97.2")
 	// Here you will define your flags and configuration settings.