diff --git a/package-lock.json b/package-lock.json
index 67f7978..1721dba 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,6 +10,7 @@
       "dependencies": {
         "@emotion/react": "^11.13.3",
         "@emotion/styled": "^11.13.0",
+        "@stomp/stompjs": "^7.0.0",
         "@tanstack/react-query": "^5.32.0",
         "axios": "^1.6.8",
         "event-source-polyfill": "^1.0.31",
@@ -1195,6 +1196,11 @@
         "win32"
       ]
     },
+    "node_modules/@stomp/stompjs": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/@stomp/stompjs/-/stompjs-7.0.0.tgz",
+      "integrity": "sha512-fGdq4wPDnSV/KyOsjq4P+zLc8MFWC3lMmP5FBgLWKPJTYcuCbAIrnRGjB7q2jHZdYCOD5vxLuFoKIYLy5/u8Pw=="
+    },
     "node_modules/@swc/core": {
       "version": "1.4.15",
       "resolved": "https://registry.npmjs.org/@swc/core/-/core-1.4.15.tgz",
diff --git a/package.json b/package.json
index 46061dc..b306a6c 100644
--- a/package.json
+++ b/package.json
@@ -14,6 +14,7 @@
   "dependencies": {
     "@emotion/react": "^11.13.3",
     "@emotion/styled": "^11.13.0",
+    "@stomp/stompjs": "^7.0.0",
     "@tanstack/react-query": "^5.32.0",
     "axios": "^1.6.8",
     "event-source-polyfill": "^1.0.31",
diff --git a/src/axios/http.ts b/src/axios/http.ts
index ec4c3b9..9a16471 100644
--- a/src/axios/http.ts
+++ b/src/axios/http.ts
@@ -1,7 +1,7 @@
 import { useSuspenseQuery } from '@tanstack/react-query';
 
 import {
-  Chat,
+  ChatArray,
   ChatRequest,
   DeadResult,
   GameExist,
@@ -45,8 +45,8 @@ export const useChatsQuery = () => {
   const { data: chats, ...rest } = useSuspenseQuery({
     queryKey: ['chats', localStorage.getItem('auth')],
     queryFn: () => getChats(),
-    refetchInterval: 500,
-    staleTime: 500,
+    // refetchInterval: 500,
+    // staleTime: 500,
   });
   return {
     chats,
@@ -85,7 +85,7 @@ export const existGame = () => {
 };
 
 export const getChats = () => {
-  return http.get<Chat[]>(`/chat`);
+  return http.get<ChatArray>(`/v2/chat`);
 };
 
 export const postChats = (payload: ChatRequest) => {
diff --git a/src/axios/instances.ts b/src/axios/instances.ts
index 585bb05..9d95997 100644
--- a/src/axios/instances.ts
+++ b/src/axios/instances.ts
@@ -1,6 +1,7 @@
 import axios, { AxiosInstance, AxiosRequestConfig } from 'axios';
 
-export const BASE_URL = 'https://dev.mafia-together.com/api';
+export const DOMAIN = 'dev.mafia-together.com';
+export const BASE_URL = `https://${DOMAIN}/api`;
 
 export const axiosInstance = axios.create({
   baseURL: BASE_URL,
diff --git a/src/components/chat/Chat.tsx b/src/components/chat/Chat.tsx
new file mode 100644
index 0000000..a8b4a79
--- /dev/null
+++ b/src/components/chat/Chat.tsx
@@ -0,0 +1,45 @@
+/** @jsxImportSource @emotion/react */
+import { css } from '@emotion/react';
+import { useRecoilState } from 'recoil';
+
+import { roomInfoState } from '../../recoil/roominfo/atom';
+import { VariablesCSS } from '../../styles/VariablesCSS';
+import { ChatArray } from '../../type';
+import { ChatForm } from './ChatForm';
+import { Chats } from './Chats';
+
+type PropsType = {
+  publishChat: (content: string) => void;
+  chats: ChatArray;
+  setChats: React.Dispatch<React.SetStateAction<ChatArray>>;
+};
+
+export const Chat = ({ publishChat, chats, setChats }: PropsType) => {
+  /* 방 정보 */
+  const [roomInfo] = useRecoilState(roomInfoState);
+
+  // 내가 살아있는지
+  const isAlive = roomInfo?.isAlive;
+
+  return (
+    <>
+      {/* 채팅목록 */}
+      <div css={middle}>
+        <Chats chats={chats} setChats={setChats} />
+      </div>
+
+      {/* 살아있는 경우에만 input창이 보인다. */}
+      {isAlive && <ChatForm publishChat={publishChat} />}
+    </>
+  );
+};
+
+const middle = css`
+  height: calc(100% - ${VariablesCSS.top} - 55px - 20px);
+  overflow: scroll;
+  -ms-overflow-style: none;
+  scrollbar-width: none;
+  &::-webkit-scrollbar {
+    display: none;
+  }
+`;
diff --git a/src/components/chat/ChatForm.tsx b/src/components/chat/ChatForm.tsx
index 9049ff7..90306e6 100644
--- a/src/components/chat/ChatForm.tsx
+++ b/src/components/chat/ChatForm.tsx
@@ -2,7 +2,6 @@
 import { css } from '@emotion/react';
 import { useState } from 'react';
 
-import { postChats } from '../../axios/http';
 import { VariablesCSS } from '../../styles/VariablesCSS';
 
 function isInvalidInputChat(inputChat: string) {
@@ -10,14 +9,19 @@ function isInvalidInputChat(inputChat: string) {
   return inputChat.length === 0;
 }
 
-export const ChatForm = () => {
+type PropsType = {
+  publishChat: (content: string) => void;
+};
+
+export const ChatForm = ({ publishChat }: PropsType) => {
   const [inputChat, setInputChat] = useState<string>('');
   return (
     <form
       css={chatForm}
       onSubmit={event => {
         event.preventDefault();
-        postChats({ contents: inputChat });
+        publishChat(inputChat);
+        // postChats({ content: inputChat });
         setInputChat('');
       }}
     >
diff --git a/src/components/chat/ChatGroup.tsx b/src/components/chat/ChatGroup.tsx
index 5b3f3e5..47fc9e4 100644
--- a/src/components/chat/ChatGroup.tsx
+++ b/src/components/chat/ChatGroup.tsx
@@ -20,8 +20,12 @@ export default forwardRef(function ChatGroup(props: PropsType, ref: any) {
       <PlayerChat job={chats[0].job} />
       <div css={right(props)}>
         <p css={nameText}>{chats[0].name}</p>
-        {chats.map(chat => (
-          <ChatMessage contents={chat.contents} isOwner={chat.isOwner} key={`${chat.timestamp}`} />
+        {chats.map((chat, idx) => (
+          <ChatMessage
+            contents={chat.content}
+            isOwner={chat.isOwner}
+            key={`${chat.timeStamp} ${idx}`}
+          />
         ))}
       </div>
     </div>
diff --git a/src/components/chat/Chats.tsx b/src/components/chat/Chats.tsx
index f4253cc..bef3ab5 100644
--- a/src/components/chat/Chats.tsx
+++ b/src/components/chat/Chats.tsx
@@ -1,13 +1,16 @@
 import { useEffect, useRef } from 'react';
 
-import { useChatsQuery } from '../../axios/http';
-import { Chat } from '../../type';
+import { Chat, ChatArray } from '../../type';
 import ChatGroup from './ChatGroup';
 
-export const Chats = () => {
+type PropsType = {
+  chats: ChatArray;
+  setChats: React.Dispatch<React.SetStateAction<ChatArray>>;
+};
+
+export const Chats = ({ chats }: PropsType) => {
   const chatRef = useRef<HTMLDivElement | null>(null);
 
-  const { chats } = useChatsQuery();
   useEffect(() => {
     if (!chatRef.current) return;
     chatRef.current.scrollIntoView({ block: 'end' });
diff --git a/src/pages/Day.tsx b/src/pages/Day.tsx
index 001db28..592f1cc 100644
--- a/src/pages/Day.tsx
+++ b/src/pages/Day.tsx
@@ -3,8 +3,7 @@ import { css } from '@emotion/react';
 import { Suspense, useEffect, useState } from 'react';
 import { useRecoilState } from 'recoil';
 
-import { ChatForm } from '../components/chat/ChatForm';
-import { Chats } from '../components/chat/Chats';
+import { Chat } from '../components/chat/Chat';
 import { Loading } from '../components/etc/Loading';
 import AppContainerCSS from '../components/layout/AppContainerCSS';
 import ModalContainer from '../components/modal/ModalContainer';
@@ -16,13 +15,16 @@ import VoteResult from '../components/modal/VoteResult';
 import TopDay from '../components/top/TopDay';
 import { gameRound, roomInfoState } from '../recoil/roominfo/atom';
 import { VariablesCSS } from '../styles/VariablesCSS';
-import { Status } from '../type';
+import { ChatArray, Status } from '../type';
 
 type PropsType = {
   statusType: Status;
+  publishChat: (content: string) => void;
+  chats: ChatArray;
+  setChats: React.Dispatch<React.SetStateAction<ChatArray>>;
 };
 
-export default function Day({ statusType }: PropsType) {
+export default function Day({ statusType, publishChat, chats, setChats }: PropsType) {
   // 라운드 (몇일차)
   const [gameRoundState] = useRecoilState(gameRound);
 
@@ -64,12 +66,7 @@ export default function Day({ statusType }: PropsType) {
               statusType={statusType}
             />
 
-            <div css={middle}>
-              <Chats />
-            </div>
-
-            {/* 살아있는 경우에만 input창이 보인다. */}
-            {isAlive && <ChatForm />}
+            <Chat publishChat={publishChat} chats={chats} setChats={setChats} />
 
             {/* 공지 모달 TIME*/}
             <ModalContainer isOpen={statusType === 'NOTICE'}>
@@ -131,13 +128,3 @@ const gameMessage = css`
   color: ${VariablesCSS.day};
   animation: smoothshow 0.8s;
 `;
-
-const middle = css`
-  height: calc(100% - ${VariablesCSS.top} - 55px - 20px);
-  overflow: scroll;
-  -ms-overflow-style: none;
-  scrollbar-width: none;
-  &::-webkit-scrollbar {
-    display: none;
-  }
-`;
diff --git a/src/pages/Game.tsx b/src/pages/Game.tsx
index e3ac92d..0094199 100644
--- a/src/pages/Game.tsx
+++ b/src/pages/Game.tsx
@@ -1,18 +1,27 @@
+import * as StompJs from '@stomp/stompjs';
 import { EventListener, EventSourcePolyfill } from 'event-source-polyfill';
 import { useEffect, useRef, useState } from 'react';
-import { useSetRecoilState } from 'recoil';
+import { useRecoilState, useSetRecoilState } from 'recoil';
 
-import { getGamesInfo } from '../axios/http';
+import { getChats, getGamesInfo } from '../axios/http';
 import { BASE_URL } from '../axios/instances';
 import { gameRound, roomInfoState } from '../recoil/roominfo/atom';
+import { ChatArray, ChatResponse, GameStatus } from '../type';
 import Day from './Day';
 import Night from './Night';
 import Result from './Result';
 import WaitingRoom from './WaitingRoom';
 
 export default function Game() {
+  const auth = localStorage.getItem('auth');
+  const [chats, setChats] = useState<ChatArray>([]);
+  const socketClientState = useRef<StompJs.Client | null>(null);
+  const [chatSubscribeId, setChatSubscribeId] = useState<StompJs.StompSubscription | null>(null);
+  const [roomsInfoState, setRoomsInfoState] = useRecoilState(roomInfoState); // 방 정보
+  const setGameRoundState = useSetRecoilState(gameRound);
+
   // 방 상태 불러오기
-  const [gamesStatus, setGameStatus] = useState({ statusType: 'WAIT' });
+  const [gamesStatus, setGameStatus] = useState<GameStatus>({ statusType: 'WAIT' });
 
   // SSE
   const eventSource = useRef<EventSourcePolyfill | null>(null);
@@ -37,10 +46,77 @@ export default function Game() {
     };
   }, []);
 
-  // 방 정보 저장 (방 상태가 바뀔때만 작동?)
-  const setRoomsInfoState = useSetRecoilState(roomInfoState); // 방 정보
+  // WebSocket
+  const connect = () => {
+    const socket = new StompJs.Client({
+      brokerURL: `wss://dev.mafia-together.com/api/stomp`,
+      reconnectDelay: 10000,
+    });
 
-  const setGameRoundState = useSetRecoilState(gameRound);
+    if (!socket.active) {
+      socket.activate();
+    }
+
+    socketClientState.current = socket;
+  };
+
+  // 채팅구독
+  const subscribeChat = () => {
+    if (!socketClientState.current?.connected) return;
+
+    const chatSubscribeId = socketClientState.current.subscribe(`/sub/chat/${auth}`, response => {
+      const msg: ChatResponse = JSON.parse(response.body);
+
+      const isOwner = msg.name == roomsInfoState.myName;
+      setChats(chats => [...chats, { ...msg, isOwner: isOwner }]);
+    });
+
+    setChatSubscribeId(chatSubscribeId);
+  };
+
+  // 채팅구독끊기
+  const unsubscribeChat = () => {
+    if (!socketClientState.current?.connected) return;
+    chatSubscribeId?.unsubscribe();
+  };
+
+  // 채팅보내기
+  const publishChat = (content: string) => {
+    if (!socketClientState.current?.connected) return;
+
+    socketClientState.current.publish({
+      destination: `/pub/chat/${auth}`,
+      body: JSON.stringify({ content: content }),
+    });
+  };
+
+  const disConnect = () => {
+    socketClientState.current?.deactivate();
+  };
+
+  // 웹소켓 연결
+  useEffect(() => {
+    connect();
+    return () => disConnect();
+  }, []);
+
+  // 채팅구독
+  useEffect(() => {
+    if (gamesStatus.statusType === 'DAY') {
+      subscribeChat();
+    }
+    return () => unsubscribeChat();
+  }, [gamesStatus.statusType]);
+
+  // 본래 채팅불러오기
+  useEffect(() => {
+    (async () => {
+      const response = await getChats();
+      setChats(response);
+    })();
+  }, []);
+
+  // 방 정보 저장 (방 상태가 바뀔때만 작동?)
   useEffect(() => {
     // 방 정보 불러오기
     (async () => {
@@ -63,7 +139,14 @@ export default function Game() {
         gamesStatus.statusType === 'NOTICE' ||
         gamesStatus.statusType === 'DAY' ||
         gamesStatus.statusType === 'VOTE' ||
-        gamesStatus.statusType === 'VOTE_RESULT') && <Day statusType={gamesStatus.statusType} />}
+        gamesStatus.statusType === 'VOTE_RESULT') && (
+        <Day
+          statusType={gamesStatus.statusType}
+          publishChat={publishChat}
+          chats={chats}
+          setChats={setChats}
+        />
+      )}
       {(gamesStatus.statusType === 'NIGHT_INTRO' || gamesStatus.statusType === 'NIGHT') && (
         <Night statusType={gamesStatus.statusType} />
       )}
diff --git a/src/pages/WaitingRoom.tsx b/src/pages/WaitingRoom.tsx
index 88fce82..85d7adf 100644
--- a/src/pages/WaitingRoom.tsx
+++ b/src/pages/WaitingRoom.tsx
@@ -5,6 +5,7 @@ import { Toaster } from 'react-hot-toast';
 import { useNavigate } from 'react-router-dom';
 
 import { getRoomsCode, startGame, useGamesInfoQuery } from '../axios/http';
+import { DOMAIN } from '../axios/instances';
 import BigButton from '../components/button/BigButton';
 import { Loading } from '../components/etc/Loading';
 import AppContainerCSS from '../components/layout/AppContainerCSS';
@@ -66,7 +67,7 @@ export default function WaitingRoom() {
 
   const onShareLink = async () => {
     // 링크 공유s
-    const inviteLink = 'https://dev.mafia-together.com/api' + '/#/participate?code=' + code;
+    const inviteLink = DOMAIN + '/#/participate?code=' + code;
     const shareData = {
       url: inviteLink,
     };
diff --git a/src/recoil/roominfo/atom.ts b/src/recoil/roominfo/atom.ts
index 08dea3f..e96acaf 100644
--- a/src/recoil/roominfo/atom.ts
+++ b/src/recoil/roominfo/atom.ts
@@ -1,6 +1,6 @@
 import { atom } from 'recoil';
 
-import { Job, GameInfo } from '../../type';
+import { GameInfo, Job } from '../../type';
 
 export const gameRound = atom({
   key: 'gameRound',
diff --git a/src/type/index.ts b/src/type/index.ts
index fdcddb6..456e9fb 100644
--- a/src/type/index.ts
+++ b/src/type/index.ts
@@ -18,16 +18,25 @@ export interface GameStatus {
   statusType: Status;
 }
 
+export type ChatArray = Chat[];
+
 export interface Chat {
   name: string;
-  contents: string;
-  timestamp: Date;
+  content: string;
+  timeStamp: Date;
   isOwner: boolean;
   job: Job;
 }
 
+export interface ChatResponse {
+  name: string;
+  content: string;
+  timeStamp: Date;
+  job: Job;
+}
+
 export interface ChatRequest {
-  contents: string;
+  content: string;
 }
 
 export interface RoomResponse {