diff --git a/.github/workflows/e2e-test.yaml b/.github/workflows/e2e-test.yaml
index 6b97ed8b..fe645f15 100644
--- a/.github/workflows/e2e-test.yaml
+++ b/.github/workflows/e2e-test.yaml
@@ -93,5 +93,12 @@ jobs:
           echo "********************************************************************************"
           echo "Running kubecm global flag --config..."
           echo "********************************************************************************"
-          bin/kubecm s kind-3rd-kind --config merge.config
-          bin/kubecm list --config merge.config
+          bin/kubecm s kind-2nd-kind --config merge.config
+          echo "********************************************************************************"
+          echo "Running kubecm list from env KUBECONFIG..."
+          echo "********************************************************************************"
+          echo "default config"
+          bin/kubecm ls
+          echo "set env"
+          export KUBECONFIG="$PWD/multi.config"
+          bin/kubecm s kind-3rd-kind
diff --git a/cmd/root.go b/cmd/root.go
index 6a3e4b0d..49d2d5f1 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -61,9 +61,13 @@ func NewCli() *Cli {
 }
 
 func (cli *Cli) setFlags() {
-	kubeconfig := flag.String("kubeconfig", filepath.Join(homeDir(), ".kube", "config"), "(optional) absolute path to the kubeconfig file")
+	// get env KUBECONFIG
+	kubeconfig := os.Getenv("KUBECONFIG")
+	if kubeconfig == "" {
+		kubeconfig = filepath.Join(homeDir(), ".kube", "config")
+	}
 	flags := cli.rootCmd.PersistentFlags()
-	flags.StringVar(&cfgFile, "config", *kubeconfig, "path of kubeconfig")
+	flags.StringVar(&cfgFile, "config", kubeconfig, "path of kubeconfig")
 	flags.IntVarP(&uiSize, "ui-size", "u", 4, "number of list items to show in menu at once")
 	flags.BoolVarP(&silenceTable, "silence-table", "s", false, "enable/disable output of context table on successful config update")
 	flags.BoolVarP(&macNotify, "mac-notify", "m", false, "enable to display Mac notification banner")
diff --git a/cmd/utils.go b/cmd/utils.go
index 9b2e1cea..546a729f 100644
--- a/cmd/utils.go
+++ b/cmd/utils.go
@@ -447,7 +447,8 @@ func CheckAndTransformFilePath(path string) (string, error) {
 	if strings.HasPrefix(path, "~/") {
 		path = filepath.Join(homeDir(), path[2:])
 	}
-	_, err := os.Stat(path) //os.Stat获取文件信息
+	// read files info
+	_, err := os.Stat(path)
 	if err != nil {
 		return "", err
 	}