diff --git a/cmd/clean.go b/cmd/clean.go
index 0af445624..b54882b3e 100644
--- a/cmd/clean.go
+++ b/cmd/clean.go
@@ -17,6 +17,7 @@ package cmd
 import (
 	"github.com/fanux/sealos/install"
 	"github.com/spf13/cobra"
+	"os"
 )
 
 // cleanCmd represents the clean command
@@ -25,6 +26,10 @@ var cleanCmd = &cobra.Command{
 	Short: "Simplest way to clean your kubernets HA cluster",
 	Long:  `sealos clean`,
 	Run: func(cmd *cobra.Command, args []string) {
+		if !install.CleanForce { // flase
+			result := install.Confirm(`clean command will clean all masters and nodes, continue clean (y/n)?`)
+			if !result { os.Exit(0) }
+		}
 		deleteNodes := install.ParseIPs(install.NodeIPs)
 		deleteMasters := install.ParseIPs(install.MasterIPs)
 		c := &install.SealConfig{}
@@ -40,7 +45,7 @@ func init() {
 	// Here you will define your flags and configuration settings.
 	cleanCmd.Flags().StringSliceVar(&install.NodeIPs, "node", []string{}, "clean node ips.kubernetes multi-nodes ex. 192.168.0.5-192.168.0.5")
 	cleanCmd.Flags().StringSliceVar(&install.MasterIPs, "master", []string{}, "clean master ips.kubernetes multi-nodes ex. 192.168.0.5-192.168.0.5")
-
+	cleanCmd.PersistentFlags().BoolVarP(&install.CleanForce, "force","f", false, "A help for foo")
 	// Cobra supports Persistent Flags which will work for this command
 	// and all subcommands, e.g.:
 	// cleanCmd.PersistentFlags().String("foo", "", "A help for foo")
diff --git a/go.sum b/go.sum
index c07253978..3092b6c72 100644
--- a/go.sum
+++ b/go.sum
@@ -42,7 +42,7 @@ github.com/docker/spdystream v0.0.0-20160310174837-449fdfce4d96/go.mod h1:Qh8CwZ
 github.com/elazarl/goproxy v0.0.0-20170405201442-c4fc26588b6e/go.mod h1:/Zj4wYkgs4iZTTu3o/KG3Itv/qCCa8VVMlb3i9OVuzc=
 github.com/emicklei/go-restful v0.0.0-20170410110728-ff4f55a20633/go.mod h1:otzb+WCGbkyDHkqmQmT5YD2WR4BBwUdeQoFo8l/7tVs=
 github.com/evanphx/json-patch v4.2.0+incompatible/go.mod h1:50XU6AFN0ol/bzJsmQLiYLvXMP4fmwYFNcr97nuDLSk=
-github.com/fanux/sealgate v0.0.4 h1:vfAQIGIzfQfvcG0qfkPcgXG9xeXu6Z6Bv2d7WjUwh3k=
+github.com/fanux/sealgate v0.0.4 h1:mvn4j3hNIdravxL3/eeyuO/z/F2BQDjbTFM3Winx0OQ=
 github.com/fanux/sealgate v0.0.4/go.mod h1:y3141RLsCSgid4+H0O+7CoAqIHDGB0r0mcR8TYnqvps=
 github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
diff --git a/install/clean.go b/install/clean.go
index 0d0d93259..1907a9f6c 100644
--- a/install/clean.go
+++ b/install/clean.go
@@ -6,6 +6,7 @@ import (
 	"github.com/wonderivan/logger"
 	"strings"
 	"sync"
+
 )
 
 //BuildClean is
diff --git a/install/utils.go b/install/utils.go
index 8fa6ce456..8253745cc 100644
--- a/install/utils.go
+++ b/install/utils.go
@@ -3,6 +3,7 @@ package install
 import (
 	"fmt"
 	"github.com/cuisongliu/sshcmd/pkg/filesize"
+	"github.com/wonderivan/logger"
 	"math/big"
 	"math/rand"
 	"net"
@@ -13,8 +14,6 @@ import (
 	"strings"
 	"sync"
 	"time"
-
-	"github.com/wonderivan/logger"
 )
 
 const oneMBByte = 1024 * 1024
@@ -238,6 +237,33 @@ func ParseIPs(ips []string) []string {
 	return hosts
 }
 
+// like y|yes|Y|YES return true
+func GetConfirmResult(str string) bool {
+	return YesRx.MatchString(str)
+}
+
+// send the prompt and get result
+func Confirm(prompt string) bool {
+	var (
+		inputStr string
+		err error
+	)
+	_, err = fmt.Fprint(os.Stdout, prompt)
+	if err != nil {
+		logger.Error("fmt.Fprint err", err)
+		os.Exit(-1)
+	}
+
+	_, err = fmt.Scanf("%s", inputStr)
+	if err != nil {
+		logger.Error("fmt.Scanf err", err)
+		os.Exit(-1)
+	}
+
+	return GetConfirmResult(inputStr)
+}
+
+
 func SliceRemoveStr(ss []string, s string) (result []string) {
 	for _, v := range ss {
 		if v != s {
diff --git a/install/vars.go b/install/vars.go
index 7a4bcc709..465bf2a77 100644
--- a/install/vars.go
+++ b/install/vars.go
@@ -1,6 +1,9 @@
 package install
 
-import "github.com/cuisongliu/sshcmd/pkg/sshutil"
+import (
+	"github.com/cuisongliu/sshcmd/pkg/sshutil"
+	"regexp"
+)
 
 var (
 	MasterIPs   []string
@@ -21,4 +24,8 @@ var (
 	WithoutCNI bool
 	//network interface name, like "eth.*|en.*"
 	Interface string
+
+	YesRx = regexp.MustCompile("^(?i:y(?:es)?)$")
+
+	CleanForce bool
 )