diff --git a/backend/routes/auth/signin.js b/backend/routes/auth/signin.js
index d1eda9f..9f16026 100644
--- a/backend/routes/auth/signin.js
+++ b/backend/routes/auth/signin.js
@@ -29,7 +29,9 @@ module.exports = function (sequelize) {
       const accessToken = jwt.sign({ userId: user.id }, secretKey, {
         expiresIn: '1h',
       });
-      res.status(200).json({ access_token: accessToken, user });
+      const expiresAt = Date.now() + 3600 * 1000; // expire date(ms)
+
+      res.status(200).json({ access_token: accessToken, expires_at: expiresAt, user });
     } catch (error) {
       console.error(error);
       res.status(500).send('Sign up failed');
diff --git a/backend/routes/auth/signup.js b/backend/routes/auth/signup.js
index b87f98f..a7260d9 100644
--- a/backend/routes/auth/signup.js
+++ b/backend/routes/auth/signup.js
@@ -31,9 +31,10 @@ module.exports = function (sequelize) {
       const accessToken = jwt.sign({ userId: user.id }, secretKey, {
         expiresIn: '1h',
       });
+      const expiresAt = Date.now() + 3600 * 1000; // expire date(ms)
 
       user.password = undefined;
-      res.status(200).json({ access_token: accessToken, user });
+      res.status(200).json({ access_token: accessToken, expires_at: expiresAt, user });
     } catch (error) {
       console.error(error);
       res.status(500).send('Sign up failed');
diff --git a/frontend/src/app/[locale]/TokenProvider.tsx b/frontend/src/app/[locale]/TokenProvider.tsx
index fce7ca4..f5504c9 100644
--- a/frontend/src/app/[locale]/TokenProvider.tsx
+++ b/frontend/src/app/[locale]/TokenProvider.tsx
@@ -3,7 +3,6 @@ import { createContext, useState, useEffect } from 'react';
 import { TokenContextType, TokenType } from '@/types/user';
 import { TokenProps } from '@/types/user';
 import { useRouter, usePathname } from '@/src/navigation';
-
 const LOCAL_STORAGE_KEY = 'testplat-auth-token';
 const privatePaths = ['/account', '/projects'];
 
@@ -34,11 +33,20 @@ const TokenProvider = ({ locale, children }: TokenProps) => {
   const [hasRestoreFinished, setHasRestoreFinished] = useState(false);
   const [token, setToken] = useState<TokenType>({
     access_token: '',
+    expires_at: 0,
     user: null,
   });
 
   const isSignedIn = () => {
-    return token && token.user && token.user.username ? true : false;
+    // check token
+    if (token && token.user && token.user.username) {
+      // check expire date
+      if (Date.now() < token.expires_at) {
+        return true;
+      }
+    }
+
+    return false;
   };
 
   const tokenContext = {
diff --git a/frontend/types/user.ts b/frontend/types/user.ts
index 10bcc98..9d76e23 100644
--- a/frontend/types/user.ts
+++ b/frontend/types/user.ts
@@ -14,6 +14,7 @@ export type TokenProps = {
 
 export type TokenType = {
   access_token: string;
+  expires_at: number;
   user: UserType;
 };