diff --git a/routes/auth.js b/routes/auth.js
index 6234891c859b246a006a85ae6e2976c1a8f40c50..9e2c4c36ef6a693db7525cd39157a3a694adb43b 100644
--- a/routes/auth.js
+++ b/routes/auth.js
@@ -4,36 +4,20 @@ const passport = require('passport');
 const router = express.Router();
 
 // GET /auth/login
-router.get('/login', (req, res) => {
-  res.send('<a href="/auth/google">Log in with Google</a>');
-});
-
-// GET /auth/logout
-router.get('/logout', (req, res) => {
-  req.logout((err) => {
-    if (err) {
-      return res.status(500).json({ error: 'Failed to logout' });
-    }
-    res.redirect(process.env.FRONTEND_URL || 'http://localhost:3000'); // 湲곕낯媛� �ㅼ젙
-  });
-});
-
-// GET /auth/google
-router.get('/google', (req, res, next) => {
-  // 湲곕낯 redirectUrl �ㅼ젙
+router.get('/login', (req, res, next) => {
+  // �꾨줎�몄뿏�쒖뿉�� �꾨떖�� redirectUrl 媛��몄삤湲�
   const redirectUrl = req.query.redirectUrl || process.env.FRONTEND_URL || 'http://localhost:3000';
 
-  // allowedDomains 諛곗뿴 �뺤씤 諛� 湲곕낯媛� �ㅼ젙
+  // redirectUrl �좏슚�� 寃�利�
   const allowedDomains = [process.env.FRONTEND_URL || 'http://localhost:3000'];
-
-  // redirectUrl 寃�利�
-  if (!allowedDomains.some((domain) => redirectUrl && redirectUrl.startsWith(domain))) {
+  if (!allowedDomains.some((domain) => redirectUrl.startsWith(domain))) {
     return res.status(400).json({ error: 'Invalid redirect URL' });
   }
 
-  // �몄뀡�� redirectUrl ����
+  // redirectUrl �몄뀡�� ����
   req.session.redirectUrl = redirectUrl;
 
+  // Google OAuth �몄쬆 �쒖옉
   passport.authenticate('google', { scope: ['profile', 'email'] })(req, res, next);
 });
 
@@ -48,7 +32,7 @@ router.get(
     // �몄뀡�먯꽌 redirectUrl �쒓굅
     req.session.redirectUrl = null;
 
-    // �꾨줎�몄뿏�쒕줈 由щ떎�대젆��
+    // �몄쬆 �꾨즺 �� �꾨줎�몄뿏�쒕줈 由щ떎�대젆��
     res.redirect(redirectUrl);
   }
 );