diff --git a/src/hooks/use-auth/use-auth-login/index.ts b/src/hooks/use-auth/use-auth-login/index.ts
index c0186c8a..3ed3836f 100644
--- a/src/hooks/use-auth/use-auth-login/index.ts
+++ b/src/hooks/use-auth/use-auth-login/index.ts
@@ -8,6 +8,7 @@ import axios, { AxiosError } from 'axios';
 import Cookies from 'js-cookie';
 
 import { API } from '@/api';
+import { useAuth } from '@/providers';
 import { LoginRequest } from '@/types/service/auth';
 import { CommonErrorResponse } from '@/types/service/common';
 
@@ -53,6 +54,8 @@ export const useLogin = () => {
   const [loginError, setLoginError] = useState<string | null>(null);
   const clearLoginError = useCallback(() => setLoginError(null), []);
 
+  const { accessToken } = useAuth();
+
   const handleLogin = async (payload: LoginRequest, formApi: { reset: () => void }) => {
     setLoginError(null);
 
@@ -68,6 +71,9 @@ export const useLogin = () => {
       });
 
       formApi.reset();
+
+      accessToken.set(result.accessToken);
+
       const nextPath = normalizePath(searchParams.get('path'));
       router.replace(nextPath);
     } catch (error) {
diff --git a/src/hooks/use-auth/use-auth-logout/index.ts b/src/hooks/use-auth/use-auth-logout/index.ts
index 4b81a09b..1ff8cf38 100644
--- a/src/hooks/use-auth/use-auth-logout/index.ts
+++ b/src/hooks/use-auth/use-auth-logout/index.ts
@@ -6,11 +6,14 @@ import { useQueryClient } from '@tanstack/react-query';
 
 import { API } from '@/api';
 import { userKeys } from '@/lib/query-key/query-key-user';
+import { useAuth } from '@/providers';
 
 export const useLogout = () => {
   const router = useRouter();
   const queryClient = useQueryClient();
 
+  const { accessToken } = useAuth();
+
   const handleLogout = async () => {
     try {
       await API.authService.logout();
@@ -20,6 +23,8 @@ export const useLogout = () => {
       // 로그인 유저 관련 캐시 정리
       queryClient.removeQueries({ queryKey: userKeys.all });
 
+      accessToken.remove();
+
       router.push('/');
     }
   };
diff --git a/src/hooks/use-notification/use-notification-get-unread-count/index.ts b/src/hooks/use-notification/use-notification-get-unread-count/index.ts
index 48e0c7b6..7b345fd5 100644
--- a/src/hooks/use-notification/use-notification-get-unread-count/index.ts
+++ b/src/hooks/use-notification/use-notification-get-unread-count/index.ts
@@ -2,14 +2,20 @@ import { useQuery } from '@tanstack/react-query';
 
 import { API } from '@/api';
 import { notificationKeys } from '@/lib/query-key/query-key-notification';
+import { useAuth } from '@/providers';
 
 export const useGetNotificationUnreadCount = () => {
-  const isAuthenticated = typeof window !== 'undefined' && document.cookie.includes('accessToken');
-
-  return useQuery({
+  const { accessToken } = useAuth();
+  const queryResult = useQuery({
     queryKey: notificationKeys.unReadCount(),
     queryFn: () => API.notificationService.getUnreadCount(),
-    retry: false, // 재시도 안 함
-    enabled: isAuthenticated,
+    enabled: !!accessToken.value,
   });
+
+  const finalData = accessToken.value ? (queryResult.data ?? 0) : 0;
+
+  return {
+    ...queryResult,
+    data: finalData,
+  };
 };