diff --git a/src/game/global/global_variables.js b/src/game/global/global_variables.js
index 65ab000..ec7ebd6 100644
--- a/src/game/global/global_variables.js
+++ b/src/game/global/global_variables.js
@@ -39,6 +39,21 @@ let sessionStorageManager = new SessionStorageManager();
 	console.log("playingAppKoreanName : " + sessionStorageManager.playingAppKoreanName);
 	console.log("record : " + sessionStorageManager.record);
 	console.log("bestRecord : " + sessionStorageManager.bestRecord);
+
+	if(sessionStorageManager.maestroID === null && !isLogin()) {
+		goLogin();
+	}
+}
+
+function isLogin() {
+	let filename = location.pathname.substring(location.pathname.lastIndexOf("/") + 1);
+	// console.log(filename);
+
+	return filename === "login.html" ? true : false;
+}
+
+function goLogin() {
+	location.href = "login.html";
 }
 
 function isTypingGame() {