diff --git a/examples/kucoin-subaccount/main.go b/examples/kucoin-subaccount/main.go
deleted file mode 100644
index 00aa250b7..000000000
--- a/examples/kucoin-subaccount/main.go
+++ /dev/null
@@ -1,70 +0,0 @@
-package main
-
-import (
-	"context"
-	"os"
-	"strings"
-
-	"github.com/c9s/bbgo/pkg/exchange/kucoin/kucoinapi"
-	"github.com/joho/godotenv"
-	log "github.com/sirupsen/logrus"
-	"github.com/spf13/cobra"
-	"github.com/spf13/viper"
-)
-
-func init() {
-	rootCmd.PersistentFlags().String("kucoin-api-key", "", "okex api key")
-	rootCmd.PersistentFlags().String("kucoin-api-secret", "", "okex api secret")
-	rootCmd.PersistentFlags().String("kucoin-api-passphrase", "", "okex api secret")
-}
-
-var rootCmd = &cobra.Command{
-	Use:   "kucoin-subaccount",
-	Short: "kucoin subaccount",
-
-	// SilenceUsage is an option to silence usage when an error occurs.
-	SilenceUsage: true,
-
-	RunE: func(cmd *cobra.Command, args []string) error {
-		subAccounts, err := client.AccountService.QuerySubAccounts()
-		if err != nil {
-			return err
-		}
-
-		log.Infof("subAccounts: %+v", subAccounts)
-		return nil
-	},
-}
-
-var client *kucoinapi.RestClient = nil
-
-func main() {
-	if _, err := os.Stat(".env.local"); err == nil {
-		if err := godotenv.Load(".env.local"); err != nil {
-			log.Fatal(err)
-		}
-	}
-
-	viper.AutomaticEnv()
-	viper.SetEnvKeyReplacer(strings.NewReplacer("-", "_"))
-
-	if err := viper.BindPFlags(rootCmd.PersistentFlags()); err != nil {
-		log.WithError(err).Error("bind pflags error")
-	}
-
-	client = kucoinapi.NewClient()
-
-	key, secret, passphrase := viper.GetString("kucoin-api-key"),
-		viper.GetString("kucoin-api-secret"),
-		viper.GetString("kucoin-api-passphrase")
-
-	if len(key) == 0 || len(secret) == 0 || len(passphrase) == 0 {
-		log.Fatal("empty key, secret or passphrase")
-	}
-
-	client.Auth(key, secret, passphrase)
-
-	if err := rootCmd.ExecuteContext(context.Background()); err != nil {
-		log.WithError(err).Error("cmd error")
-	}
-}