diff --git a/src/user.ts b/src/user.ts
index 1371999..b7cda49 100644
--- a/src/user.ts
+++ b/src/user.ts
@@ -116,18 +116,19 @@ export default class User {
     vscode.window.showInformationMessage(vscode.l10n.t("User has logged out!"))
   }
 
-  public isLogged() {
-    var existUsername = false;
-    var existUserToken = false;
-    if (this.username != undefined && this.username != '') {
-      existUsername = true;
-    }
-    if (this.userToken != undefined && this.userToken != '') {
-      existUserToken = true;
-    }
+  public async isLogged(): Promise<boolean> {
+    const username: string|undefined  = this.context.globalState.get(this.usernameKey)
+    const userToken: string|undefined = this.context.globalState.get(this.userTokenKey)
+    if ((username != undefined && username != '') && (userToken != undefined && userToken != '')) {
+      const devstarAPIHandler = new DevstarAPIHandler(this.devstarDomain)
 
-    if (existUsername && existUserToken) {
-      return true;
+      const res = await devstarAPIHandler.verifyToken(userToken, username)
+      if (!res) {
+        console.error("username or token is error")
+        return false;
+      } else {
+        return true;
+      }
     } else {
       return false;
     }