diff --git a/config/config.go b/config/config.go
index 04c83fe..f7a0480 100644
--- a/config/config.go
+++ b/config/config.go
@@ -30,17 +30,17 @@ func NewWithCtx(ctx *cli.Context) (*Config, error) {
 	c := New()
 	if ctx.NumFlags() > 0 {
 		c.Core = engine.Config{
-			SaveRoot:  ctx.String(uploaderFlagSaveRoot),
+			SaveRoot:  ctx.String(uploaderSaveRoot),
 			ForceSync: true,
 		}
 		c.Driver = uploader.Config{
-			Name:      ctx.String(uploaderFlagDriver),
-			Region:    ctx.String(uploaderFlagRegion),
-			Bucket:    ctx.String(uploaderFlagBucket),
-			AccessKey: ctx.String(uploaderFlagAccessKey),
-			SecretKey: ctx.String(uploaderFlagSecretKey),
+			Name:      ctx.String(uploaderDriver),
+			Region:    ctx.String(uploaderRegion),
+			Bucket:    ctx.String(uploaderBucket),
+			AccessKey: ctx.String(uploaderAccessKey),
+			SecretKey: ctx.String(uploaderSecretKey),
 		}
-		if exclude := ctx.String(uploaderFlagExclude); exclude != "" {
+		if exclude := ctx.String(uploaderExclude); exclude != "" {
 			c.Core.Excludes = strings.Split(exclude, ",")
 		}
 	} else if err := c.Parse(); err != nil {
@@ -76,12 +76,13 @@ func (c *Config) Prompt() error {
 		mask     rune
 		validate promptui.ValidateFunc
 	}{
-		{label: uploaderFlagDriver, value: &c.Driver.Name, validate: uploader.DriverValidate},
-		{label: uploaderFlagRegion, value: &c.Driver.Region},
-		{label: uploaderFlagBucket, value: &c.Driver.Bucket},
-		{label: uploaderFlagAccessKey, value: &c.Driver.AccessKey},
-		{label: uploaderFlagSecretKey, value: &c.Driver.SecretKey, mask: '*'},
-		{label: uploaderFlagSaveRoot, value: &c.Core.SaveRoot},
+		{label: uploaderDriver, value: &c.Driver.Name, validate: uploader.DriverValidate},
+		{label: uploaderRegion, value: &c.Driver.Region},
+		{label: uploaderBucket, value: &c.Driver.Bucket},
+		{label: uploaderAccessKey, value: &c.Driver.AccessKey},
+		{label: uploaderSecretKey, value: &c.Driver.SecretKey, mask: '*'},
+		{label: uploaderSaveRoot, value: &c.Core.SaveRoot},
+		{label: uploaderVisitHost, value: &c.Core.VisitHost},
 	}
 
 	for _, prompt := range prompts {
diff --git a/config/flags.go b/config/flags.go
index 970f40e..dffaace 100644
--- a/config/flags.go
+++ b/config/flags.go
@@ -4,13 +4,14 @@ import "github.com/urfave/cli"
 
 const (
 	// uploader flags
-	uploaderFlagDriver    = "driver"
-	uploaderFlagRegion    = "region"
-	uploaderFlagAccessKey = "access_key"
-	uploaderFlagSecretKey = "secret_key"
-	uploaderFlagBucket    = "bucket"
-	uploaderFlagExclude   = "exclude"
-	uploaderFlagSaveRoot  = "save_root"
+	uploaderDriver    = "driver"
+	uploaderRegion    = "region"
+	uploaderAccessKey = "access_key"
+	uploaderSecretKey = "secret_key"
+	uploaderBucket    = "bucket"
+	uploaderExclude   = "exclude"
+	uploaderSaveRoot  = "save_root"
+	uploaderVisitHost = "visit_host"
 
 	// uploader environments
 	uploaderEnvAccessKey = "UPTOC_UPLOADER_AK"
@@ -20,34 +21,34 @@ const (
 // Flags defined the support flags for the cli
 var Flags = []cli.Flag{
 	cli.StringFlag{
-		Name:  uploaderFlagDriver,
+		Name:  uploaderDriver,
 		Usage: "specify cloud storage engine",
 		Value: "oss",
 	},
 	cli.StringFlag{
-		Name:  uploaderFlagRegion,
+		Name:  uploaderRegion,
 		Usage: "specify region of the cloud platform",
 	},
 	cli.StringFlag{
-		Name:  uploaderFlagBucket,
+		Name:  uploaderBucket,
 		Usage: "specify bucket name of the cloud platform",
 	},
 	cli.StringFlag{
-		Name:   uploaderFlagAccessKey,
+		Name:   uploaderAccessKey,
 		Usage:  "specify key id of the cloud platform",
 		EnvVar: uploaderEnvAccessKey,
 	},
 	cli.StringFlag{
-		Name:   uploaderFlagSecretKey,
+		Name:   uploaderSecretKey,
 		Usage:  "specify key secret of the cloud platform",
 		EnvVar: uploaderEnvSecretKey,
 	},
 	cli.StringFlag{
-		Name:  uploaderFlagExclude,
+		Name:  uploaderExclude,
 		Usage: "specify exclude the given comma separated directories (example: --exclude=.cache,test)",
 	},
 	cli.StringFlag{
-		Name:  uploaderFlagSaveRoot,
+		Name:  uploaderSaveRoot,
 		Usage: "specify remote directory, default is root",
 	},
 }