diff --git a/src/domains/community/api/fetchComment.ts b/src/domains/community/api/fetchComment.ts
index 4d66342c..c4d1ffef 100644
--- a/src/domains/community/api/fetchComment.ts
+++ b/src/domains/community/api/fetchComment.ts
@@ -48,7 +48,6 @@ export const postComments = async (postId: number | ParamValue, content: string)
 };
 
 export async function updateComment(
-  accessToken: string | null,
   postId: number | ParamValue,
   commentId: number,
   content: string
@@ -57,8 +56,8 @@ export async function updateComment(
     method: 'PATCH',
     headers: {
       'Content-Type': 'application/json',
-      Authorization: `Bearer ${accessToken}`,
     },
+    credentials: 'include',
     body: JSON.stringify({ content }),
   });
 
@@ -69,16 +68,10 @@ export async function updateComment(
   }
 }
 
-export async function deleteComment(
-  accessToken: string | null,
-  postId: number | ParamValue,
-  commentId: number
-): Promise<void> {
+export async function deleteComment(postId: number | ParamValue, commentId: number): Promise<void> {
   const response = await fetch(`${getApi}/posts/${postId}/comments/${commentId}`, {
     method: 'DELETE',
-    headers: {
-      Authorization: `Bearer ${accessToken}`,
-    },
+    credentials: 'include',
   });
 
   if (!response.ok) {
diff --git a/src/domains/community/detail/Comment.tsx b/src/domains/community/detail/Comment.tsx
index f7009de8..ea93f631 100644
--- a/src/domains/community/detail/Comment.tsx
+++ b/src/domains/community/detail/Comment.tsx
@@ -12,10 +12,9 @@ type Props = {
 };
 
 function Comment({ postId }: Props) {
-  const { user, accessToken } = useAuthStore(
+  const { user } = useAuthStore(
     useShallow((state) => ({
       user: state.user,
-      accessToken: state.accessToken,
     }))
   );
   const {
@@ -29,7 +28,7 @@ function Comment({ postId }: Props) {
     handleAskDeleteComment,
     handleConfirmDelete,
     loadMoreComments,
-  } = useComments(postId, user, accessToken);
+  } = useComments(postId, user);
 
   return (
     <>
diff --git a/src/domains/community/hook/useComment.ts b/src/domains/community/hook/useComment.ts
index d94e0f90..e7340020 100644
--- a/src/domains/community/hook/useComment.ts
+++ b/src/domains/community/hook/useComment.ts
@@ -5,7 +5,7 @@ import { CommentType } from '../types/post';
 import { User } from '@/domains/shared/store/auth';
 import { ParamValue } from 'next/dist/server/request/params';
 
-export function useComments(postId: ParamValue, user: User | null, accessToken?: string | null) {
+export function useComments(postId: ParamValue, user: User | null) {
   const [comments, setComments] = useState<CommentType[] | null>(null);
   const [isEnd, setIsEnd] = useState(false);
   const [isLoading, setIsLoading] = useState(false);
@@ -31,7 +31,7 @@ export function useComments(postId: ParamValue, user: User | null, accessToken?:
       return;
     }
     try {
-      await updateComment(accessToken!, postId, commentId, content);
+      await updateComment(postId, commentId, content);
       setComments((prev) =>
         prev
           ? prev.map((comment) =>
@@ -59,7 +59,7 @@ export function useComments(postId: ParamValue, user: User | null, accessToken?:
     if (!deleteTarget) return;
 
     try {
-      await deleteComment(accessToken!, deleteTarget.postId, deleteTarget.commentId);
+      await deleteComment(deleteTarget.postId, deleteTarget.commentId);
       setComments((prev) =>
         prev ? prev.filter((c) => c.commentId !== deleteTarget.commentId) : prev
       );
diff --git a/src/domains/login/components/ClientInitHook.tsx b/src/domains/login/components/ClientInitHook.tsx
index a73a7ba9..034d2845 100644
--- a/src/domains/login/components/ClientInitHook.tsx
+++ b/src/domains/login/components/ClientInitHook.tsx
@@ -2,10 +2,18 @@
 
 import { useFetchInterceptor } from '@/shared/hook/useFetchInterceptor';
 import { useIdleLogout } from '../hook/useIdleLogout';
+import { useEffect } from 'react';
+import { useAuthStore } from '@/domains/shared/store/auth';
 
 function ClientInitHook() {
+  const checkAuth = useAuthStore((state) => state.checkAuth);
+
   useIdleLogout();
   useFetchInterceptor();
+
+  useEffect(() => {
+    checkAuth();
+  }, [checkAuth]);
   return null;
 }
 export default ClientInitHook;
diff --git a/src/domains/login/hook/useIdleLogout.ts b/src/domains/login/hook/useIdleLogout.ts
index c2cfd493..d8708917 100644
--- a/src/domains/login/hook/useIdleLogout.ts
+++ b/src/domains/login/hook/useIdleLogout.ts
@@ -5,7 +5,7 @@ import { useLogout } from './useLogout';
 import { useToast } from '@/shared/hook/useToast';
 import { useAuthStore } from '@/domains/shared/store/auth';
 
-const IDLE_TIMEOUT = 4 * 60 * 60 * 1000;
+const IDLE_TIMEOUT = 1 * 60 * 1000;
 
 export const useIdleLogout = () => {
   const handleLogout = useLogout();
diff --git a/src/domains/recipe/api/fetchRecipeComment.ts b/src/domains/recipe/api/fetchRecipeComment.ts
index 627001ee..80f758a4 100644
--- a/src/domains/recipe/api/fetchRecipeComment.ts
+++ b/src/domains/recipe/api/fetchRecipeComment.ts
@@ -22,7 +22,6 @@ export const getRecipeComment = async (cocktailId: number): Promise<CommentType[
 };
 
 export async function updateComment(
-  accessToken: string | null,
   postId: number,
   commentId: number,
   content: string
@@ -32,8 +31,8 @@ export async function updateComment(
     method: 'PATCH',
     headers: {
       'Content-Type': 'application/json',
-      Authorization: `Bearer ${accessToken}`,
     },
+    credentials: 'include',
     body: JSON.stringify({ content }),
   });
 
@@ -44,16 +43,10 @@ export async function updateComment(
   }
 }
 
-export async function deleteRecipeComment(
-  accessToken: string | null,
-  cocktailId: number,
-  commentId: number
-): Promise<void> {
+export async function deleteRecipeComment(cocktailId: number, commentId: number): Promise<void> {
   const response = await fetch(`${getApi}/cocktails/${cocktailId}/comments/${commentId}`, {
     method: 'DELETE',
-    headers: {
-      Authorization: `Bearer ${accessToken}`,
-    },
+    credentials: 'include',
   });
 
   if (!response.ok) {
diff --git a/src/domains/recipe/api/useRecipeComment.ts b/src/domains/recipe/api/useRecipeComment.ts
index d5aa6f6d..3fa8e6d1 100644
--- a/src/domains/recipe/api/useRecipeComment.ts
+++ b/src/domains/recipe/api/useRecipeComment.ts
@@ -5,11 +5,7 @@ import { CommentType } from '@/domains/community/types/post';
 import { deleteRecipeComment, getRecipeComment, updateComment } from './fetchRecipeComment';
 import { useToast } from '@/shared/hook/useToast';
 
-export function useRecipeComments(
-  cocktailId: number,
-  user: User | null,
-  accessToken: string | null
-) {
+export function useRecipeComments(cocktailId: number, user: User | null) {
   const [comments, setComments] = useState<CommentType[] | null>(null);
   const [isEnd, setIsEnd] = useState(false);
   const [isLoading, setIsLoading] = useState(false);
@@ -36,7 +32,7 @@ export function useRecipeComments(
       return;
     }
     try {
-      await updateComment(accessToken!, cocktailId, commentId, content);
+      await updateComment(cocktailId, commentId, content);
       setComments((prev) =>
         prev
           ? prev.map((comment) =>
@@ -62,7 +58,7 @@ export function useRecipeComments(
     if (!deleteTarget) return;
 
     try {
-      await deleteRecipeComment(accessToken!, deleteTarget.cocktailId, deleteTarget.commentId);
+      await deleteRecipeComment(deleteTarget.cocktailId, deleteTarget.commentId);
       setComments((prev) =>
         prev ? prev.filter((c) => c.commentId !== deleteTarget.commentId) : prev
       );
diff --git a/src/domains/recipe/components/details/RecipeComment.tsx b/src/domains/recipe/components/details/RecipeComment.tsx
index e85e6ec8..581a0608 100644
--- a/src/domains/recipe/components/details/RecipeComment.tsx
+++ b/src/domains/recipe/components/details/RecipeComment.tsx
@@ -13,10 +13,9 @@ interface Props {
 }
 
 function RecipeComment({ cocktailId }: Props) {
-  const { user, accessToken } = useAuthStore(
+  const { user } = useAuthStore(
     useShallow((state) => ({
       user: state.user,
-      accessToken: state.accessToken,
     }))
   );
 
@@ -60,7 +59,7 @@ function RecipeComment({ cocktailId }: Props) {
     deleteTarget,
     handleConfirmDelete,
     setDeleteTarget,
-  } = useRecipeComments(cocktailId, user, accessToken);
+  } = useRecipeComments(cocktailId, user);
 
   return (
     <div className="mb-10 border-t-1 border-gray">
diff --git a/src/domains/shared/store/auth.ts b/src/domains/shared/store/auth.ts
index 3a662b24..eebb8548 100644
--- a/src/domains/shared/store/auth.ts
+++ b/src/domains/shared/store/auth.ts
@@ -1,6 +1,5 @@
 import { getApi } from '@/app/api/config/appConfig';
 import { create } from 'zustand';
-import { persist } from 'zustand/middleware';
 
 export interface User {
   id: string;
@@ -13,68 +12,88 @@ export interface User {
 
 interface AuthState {
   user: User | null;
-  accessToken: string | null;
   isLoggedIn: boolean;
-  setUser: (user: User, token: string) => void;
+  setUser: (user: User) => void;
   logout: () => Promise<void>;
   loginWithProvider: (provider: User['provider']) => void;
 
   updateUser: () => Promise<User | null>;
+  checkAuth: () => Promise<User | null>;
 }
 
-export const useAuthStore = create<AuthState>()(
-  persist(
-    (set) => ({
-      user: null,
-      accessToken: null,
-      isLoggedIn: false,
+export const useAuthStore = create<AuthState>()((set) => ({
+  user: null,
+  isLoggedIn: false,
 
-      loginWithProvider: (provider) => {
-        window.location.href = `${getApi}/oauth2/authorization/${provider}`;
-      },
+  loginWithProvider: (provider) => {
+    window.location.href = `${getApi}/oauth2/authorization/${provider}`;
+  },
 
-      setUser: (user, token) => {
-        const updatedUser = { ...user, abv_degree: 5.0 };
-        set({ user: updatedUser, accessToken: token, isLoggedIn: true });
-      },
+  setUser: (user) => {
+    const updatedUser = { ...user, abv_degree: user.abv_degree ?? 5.0 };
+    set({ user: updatedUser, isLoggedIn: true });
+  },
 
-      logout: async () => {
-        try {
-          await fetch(`${getApi}/user/auth/logout`, {
-            method: 'POST',
-            credentials: 'include',
-          });
-          set({ user: null, accessToken: null, isLoggedIn: false });
-        } catch (err) {
-          console.error('로그아웃 실패', err);
-        }
-      },
+  // 로그아웃
+  logout: async () => {
+    try {
+      await fetch(`${getApi}/user/auth/logout`, {
+        method: 'POST',
+        credentials: 'include',
+      });
+      set({ user: null, isLoggedIn: false });
+    } catch (err) {
+      console.error('로그아웃 실패', err);
+    } finally {
+      set({ user: null, isLoggedIn: false });
+    }
+  },
 
-      updateUser: async () => {
-        try {
-          const res = await fetch(`${getApi}/user/auth/refresh`, {
-            method: 'POST',
-            credentials: 'include',
-            headers: { 'Content-Type': 'application/json' },
-          });
+  // idle + refresh 시 호출
+  updateUser: async () => {
+    try {
+      const res = await fetch(`${getApi}/user/auth/refresh`, {
+        method: 'POST',
+        credentials: 'include',
+        headers: { 'Content-Type': 'application/json' },
+      });
 
-          if (!res.ok) throw new Error('토큰 갱신 실패');
-          const data = await res.json();
-          const userInfo = data?.data?.user;
-          const accessToken = data?.data?.accessToken;
+      if (!res.ok) throw new Error('토큰 갱신 실패');
 
-          if (userInfo && accessToken) {
-            set({ user: userInfo, accessToken, isLoggedIn: true });
-            return userInfo;
-          }
-          return null;
-        } catch (err) {
-          console.error('updateUser 실패', err);
-          set({ accessToken: null, user: null, isLoggedIn: false });
-          return null;
-        }
-      },
-    }),
-    { name: 'auth-storage' } // localStorage key
-  )
-);
+      const data = await res.json();
+      const userInfo = data?.data?.user;
+
+      if (userInfo) {
+        set({ user: userInfo, isLoggedIn: true });
+        return userInfo;
+      }
+      return null;
+    } catch (err) {
+      console.error('updateUser 실패', err);
+      set({ user: null, isLoggedIn: false });
+      return null;
+    }
+  },
+
+  // 시작 시 로그인 상태 확인
+  checkAuth: async () => {
+    try {
+      const res = await fetch(`${getApi}/user/auth/me`, {
+        method: 'GET',
+        credentials: 'include',
+      });
+      if (!res.ok) throw new Error('인증 실패');
+
+      const data = await res.json();
+      const userInfo = data?.data?.user;
+      if (userInfo) {
+        set({ user: userInfo, isLoggedIn: true });
+        return userInfo;
+      }
+      return null;
+    } catch {
+      set({ user: null, isLoggedIn: false });
+      return null;
+    }
+  },
+}));