diff --git a/backend/app.js b/backend/app.js
index d6870c1..a22fd60 100644
--- a/backend/app.js
+++ b/backend/app.js
@@ -9,12 +9,13 @@ const passport = require("passport");
 dotenv.config();
 const pageRouter = require("./routes/page");
 const authRouter = require("./routes/auth");
-const postRouter = require("./routes/post");
 const { sequelize } = require("./models");
 const passportConfig = require("./passport");
 const cors = require("cors");
 
 const app = express();
+app.use(cors());
+
 passportConfig();
 app.set("port", process.env.PORT || 8001);
 app.set("view engine", "html");
@@ -23,7 +24,7 @@ nunjucks.configure("views", {
   watch: true,
 });
 sequelize
-  .sync({ force: false }) //sequelize가 초기화 될 때 DB에 필요한 테이블 생성
+  .sync({ force: false })
   .then(() => {
     console.log("데이터베이스 연결 성공");
   })
@@ -34,7 +35,6 @@ sequelize
 app.use(morgan("dev"));
 app.use(express.static(path.join(__dirname, "public")));
 app.use("/img", express.static(path.join(__dirname, "uploads")));
-app.use(cors());
 
 app.use(express.json());
 app.use(express.urlencoded({ extended: true }));
@@ -54,7 +54,6 @@ app.use(passport.initialize());
 app.use(passport.session());
 app.use("/", pageRouter);
 app.use("/auth", authRouter);
-app.use("/post", postRouter);
 
 app.use((req, res, next) => {
   const error = new Error(`${req.method} ${req.url} 라우터가 없습니다.`);
diff --git a/backend/controllers/contributeProjects/index.js b/backend/controllers/contributeProjects/index.js
index 43f9ec5..63d2733 100644
--- a/backend/controllers/contributeProjects/index.js
+++ b/backend/controllers/contributeProjects/index.js
@@ -5,7 +5,6 @@ const {
   upload_commit,
 } = require("../../routes/middlewares");
 const { Post, User, Comment } = require("../../models");
-//field값
 
 const createContriProjectAPI = async (req, res) => {
   let id = req.params.id;
diff --git a/backend/controllers/index.js b/backend/controllers/index.js
deleted file mode 100644
index a42326d..0000000
--- a/backend/controllers/index.js
+++ /dev/null
@@ -1,36 +0,0 @@
-// const express = require("express");
-// const router = express.Router();
-
-// const userInformationAPI = (req, res) => {
-//   try {
-//     const myinfo = await User.findOne({
-//       attributes: ["email", "introduce"],
-//       where: {
-//         email: req.user.email,
-//       },
-//     });
-//     res.status(200).json({
-//       email: myinfo,
-//     });
-//   } catch (err) {
-//     res.status(400).json({
-//       error: err,
-//     });
-//   }
-// };
-
-const createContributeProjectAPI = (req, res) => {};
-const readRequestProjectsAPI = (req, res) => {};
-const readContributeProjectsAPI = (req, res) => {
-  if (!id) {
-    res.status(400).json({ error: "you don't send requestProject Id!" });
-  }
-
-  res.status(200).json({ contributeProject: projects });
-};
-module.exports = {
-  userInformationAPI,
-  createContributeProjectAPI,
-  readRequestProjectsAPI,
-  readContributeProjectsAPI,
-};
diff --git a/backend/controllers/mypage/index.js b/backend/controllers/mypage/index.js
index d0f0468..35c697c 100644
--- a/backend/controllers/mypage/index.js
+++ b/backend/controllers/mypage/index.js
@@ -2,7 +2,7 @@ const express = require("express");
 const router = express.Router();
 const { isLoggedIn, isNotLoggedIn } = require("../../routes/middlewares");
 const { Post, User } = require("../../models");
-//field값
+
 const readMyPageAPI = async (req, res, next) => {
   try {
     const myinfo = await User.findOne({
diff --git a/backend/controllers/requestProjects/index.js b/backend/controllers/requestProjects/index.js
index 4dc7af0..767348e 100644
--- a/backend/controllers/requestProjects/index.js
+++ b/backend/controllers/requestProjects/index.js
@@ -5,7 +5,6 @@ const {
   upload,
 } = require("../../routes/middlewares");
 const { Post, User, Comment } = require("../../models");
-//field값
 
 const createProjectAPI = async (req, res) => {
   if (req.file) {
@@ -16,9 +15,10 @@ const createProjectAPI = async (req, res) => {
       mood: req.body.mood,
       lyrics_text: req.body.lyrics_text,
       audioFile: req.file.location,
-      music_field: Boolean(req.body.music_field),
-      lyrics_field: Boolean(req.body.lyrics_field),
-      instrument_field: Boolean(req.body.instrument_field),
+      music_field: req.body.music_field,
+      lyrics_field: req.body.lyrics_field,
+      instrument_field: req.body.instrument_field,
+      uid: req.user.id,
     });
     if (!post) {
       res.status(400).json({
@@ -26,18 +26,23 @@ const createProjectAPI = async (req, res) => {
         post: post,
       });
     } else {
-      const post = await Post.create({
-        title: req.body.title,
-        description: req.body.description,
-        genre: req.body.genre,
-        mood: req.body.mood,
-        lyrics_text: req.body.lyrics_text,
-        music_field: req.body.music_field,
-        lyrics_field: req.body.lyrics_field,
-        instrument_field: req.body.instrument_field,
-        uid: req.user.id,
+      res.status(200).json({
+        sucess: true,
+        post: post,
       });
     }
+  } else {
+    const post = await Post.create({
+      title: req.body.title,
+      description: req.body.description,
+      genre: req.body.genre,
+      mood: req.body.mood,
+      lyrics_text: req.body.lyrics_text,
+      music_field: req.body.music_field,
+      lyrics_field: req.body.lyrics_field,
+      instrument_field: req.body.instrument_field,
+      uid: req.user.id,
+    });
     if (!post) {
       res.status(400).json({
         sucess: false,
@@ -53,9 +58,14 @@ const createProjectAPI = async (req, res) => {
 
 const mainInfoAPI = async (req, res) => {
   const maininfo = await Post.findAll({
+    include: [
+      {
+        model: User,
+        attributes: ["email"],
+      },
+    ],
     attributes: [
-      "email",
-      "pid",
+      "id",
       "title",
       "music_field",
       "lyrics_field",
@@ -66,6 +76,7 @@ const mainInfoAPI = async (req, res) => {
       "lyrics_text",
     ],
   });
+  res.set({ "access-control-allow-origin": "*" });
   if (!maininfo) {
     res.status(400).json({
       success: false,
@@ -79,13 +90,16 @@ const commentsAPI = async (req, res, next) => {
   let id = req.params.id;
   try {
     const comments = await Comment.findAll({
-      include: {
-        model: Post,
-        where: { id: id },
-      },
+      where: { uid: id },
     });
-    const project = await Post.findAll({
-      where: { id: id },
+    const project = await Post.findOne({
+      where: { id },
+      include: [
+        {
+          model: User,
+          attributes: ["introduce", "email"],
+        },
+      ],
     });
     res.status(200).json({ comments, project });
   } catch (err) {
diff --git a/backend/controllers/user/index.js b/backend/controllers/user/index.js
deleted file mode 100644
index 81d9240..0000000
--- a/backend/controllers/user/index.js
+++ /dev/null
@@ -1,2 +0,0 @@
-// const express = require("express");
-// const router = express.Router();
diff --git a/backend/models/comment.js b/backend/models/comment.js
index 389ab34..955cc67 100644
--- a/backend/models/comment.js
+++ b/backend/models/comment.js
@@ -39,6 +39,3 @@ module.exports = class Comment extends Sequelize.Model {
     db.Comment.belongsTo(db.User, { foreignKey: "uid", sourceKey: "id" });
   }
 };
-//requestid 외래키
-//uid 외래키
-//constraint uid foreign key uid references user.uid on delete cascade on update cascade
diff --git a/backend/models/index.js b/backend/models/index.js
index e77ff0a..ed323bd 100644
--- a/backend/models/index.js
+++ b/backend/models/index.js
@@ -1,6 +1,6 @@
 const Sequelize = require("sequelize");
-const env = "test" || "development"; //config.json의 development 가져오기
-const config = require("../config/config")[env]; //config.json의 development 가져오기
+const env = "test" || "development";
+const config = require("../config/config")[env];
 const User = require("./user");
 const Post = require("./post");
 const Comment = require("./comment");
@@ -17,7 +17,7 @@ db.sequelize = sequelize;
 db.User = User;
 db.Post = Post;
 db.Comment = Comment;
-//사람과 게시글은 1:1관계, 게시글과 해시태그는 1:N 관계
+
 User.init(sequelize);
 Post.init(sequelize);
 Comment.init(sequelize);
diff --git a/backend/models/post.js b/backend/models/post.js
index 7ddb9b3..7794215 100644
--- a/backend/models/post.js
+++ b/backend/models/post.js
@@ -5,7 +5,6 @@ module.exports = class Post extends Sequelize.Model {
     return super.init(
       {
         title: {
-          //id 생략. -> sequlize에서는 id가 생략될 수 있음.
           type: Sequelize.STRING(140),
           allowNull: false,
         },
@@ -56,8 +55,8 @@ module.exports = class Post extends Sequelize.Model {
         underscored: false,
         modelName: "Post",
         tableName: "posts",
-        paranoid: false, //deleted at false -> 게시글 삭제시 완전 삭제
-        charset: "utf8mb4", //이모티콘
+        paranoid: false,
+        charset: "utf8mb4",
         collate: "utf8mb4_general_ci",
       }
     );
diff --git a/backend/models/user.js b/backend/models/user.js
index 14cd16a..c61a269 100644
--- a/backend/models/user.js
+++ b/backend/models/user.js
@@ -34,13 +34,13 @@ module.exports = class User extends Sequelize.Model {
       },
       {
         sequelize,
-        timestamps: true, //생성일 수정일 삭제일이 기록
+        timestamps: true,
         underscored: false,
         modelName: "User",
         tableName: "users",
         paranoid: true,
         charset: "utf8",
-        collate: "utf8_general_ci", //한글 지원
+        collate: "utf8_general_ci",
       }
     );
   }
diff --git a/backend/passport/index.js b/backend/passport/index.js
index ec34bd4..9ee9522 100644
--- a/backend/passport/index.js
+++ b/backend/passport/index.js
@@ -4,7 +4,7 @@ const User = require("../models/user");
 
 module.exports = () => {
   passport.serializeUser((user, done) => {
-    done(null, user.id); // 세션에 user 의 id 만 저장
+    done(null, user.id);
   });
 
   passport.deserializeUser((id, done) => {
@@ -15,5 +15,3 @@ module.exports = () => {
 
   local();
 };
-
-//serializeuser는
diff --git a/backend/passport/localStrategy.js b/backend/passport/localStrategy.js
index 05de452..425a5b3 100644
--- a/backend/passport/localStrategy.js
+++ b/backend/passport/localStrategy.js
@@ -1,30 +1,35 @@
-const passport = require('passport');
-const LocalStrategy = require('passport-local').Strategy;
-const bcrypt = require('bcrypt');
+const passport = require("passport");
+const LocalStrategy = require("passport-local").Strategy;
+const bcrypt = require("bcrypt");
 
-const User = require('../models/user');
+const User = require("../models/user");
 
-module.exports = () => {//로그인 로직. 모듈임.
-  passport.use(new LocalStrategy({
-    usernameField: 'email', //req.body.email
-    passwordField: 'password', //req.body.password
-  }, async (email, password, done) => {
-    try {
-      const exUser = await User.findOne({ where: { email } });//그 email을 가진 사람이 있나 찾기
-      if (exUser) {
-        const result = await bcrypt.compare(password, exUser.password);//brypt.compare로 비번이랑, 디비에 비번이랑 비교
-        if (result) {
-          done(null, exUser);
-        } else {
-          done(null, false, { message: '비밀번호가 일치하지 않습니다.' });
+module.exports = () => {
+  passport.use(
+    new LocalStrategy(
+      {
+        usernameField: "email",
+        passwordField: "password",
+      },
+      async (email, password, done) => {
+        try {
+          const exUser = await User.findOne({ where: { email } });
+          if (exUser) {
+            const result = await bcrypt.compare(password, exUser.password);
+            if (result) {
+              done(null, exUser);
+            } else {
+              done(null, false, { message: "비밀번호가 일치하지 않습니다." });
+            }
+          } else {
+            done(null, false, { message: "가입되지 않은 회원입니다." });
+          }
+        } catch (error) {
+          console.error(error);
+          done(error);
         }
-      } else {
-        done(null, false, { message: '가입되지 않은 회원입니다.' });
       }
-    } catch (error) {
-      console.error(error);
-      done(error);
-    }
-  }));
+    )
+  );
 };
 //email, password로 로그인하는 것을 적은 파일
diff --git a/backend/routes/auth.js b/backend/routes/auth.js
index ff7d9bd..f31c641 100644
--- a/backend/routes/auth.js
+++ b/backend/routes/auth.js
@@ -9,14 +9,14 @@ const router = express.Router();
 router.post("/join", isNotLoggedIn, async (req, res, next) => {
   const { email, password } = req.body;
   try {
-    const exUser = await User.findOne({ where: { email } }); //기존이메일로 가입한 사람이 있나?
+    const exUser = await User.findOne({ where: { email } });
     if (exUser) {
       return res.status(401).json({
         msg: "User already exist",
         success: false,
-      }); //프론트에서 이미 가입한 메일이라고 알림
+      });
     }
-    const hash = await bcrypt.hash(password, 12); //기존이메일이 아니면 password를 해쉬화 해서 저장
+    const hash = await bcrypt.hash(password, 12);
     await User.create({
       email,
       password: hash,
@@ -38,7 +38,6 @@ router.post("/login", isNotLoggedIn, (req, res, next) => {
       return next(authError);
     }
     if (!user) {
-      //로그인 실패한 경우;
       return res.status(200).json({
         msg: `${info.message}`,
         success: false,
diff --git a/backend/routes/page.js b/backend/routes/page.js
index 8319b1a..1f99f87 100644
--- a/backend/routes/page.js
+++ b/backend/routes/page.js
@@ -11,17 +11,15 @@ const mypageController = require("../controllers/mypage");
 const requestProjectController = require("../controllers/requestProjects");
 const contributeProjectController = require("../controllers/contributeProjects");
 const { request } = require("express");
+const cors = require("cors");
 router.get("/mypage", isLoggedIn, mypageController.readMyPageAPI);
 router.post(
   "/requestProjects",
   upload.single("data"),
-  requestProjectController.createProjectAPI
-);
-router.get(
-  "/requestProjects",
   isLoggedIn,
-  requestProjectController.mainInfoAPI
+  requestProjectController.createProjectAPI
 );
+router.get("/requestProjects", requestProjectController.mainInfoAPI);
 router.get(
   "/requestProjects/:id/comments",
   isLoggedIn,
@@ -33,62 +31,3 @@ router.post(
   contributeProjectController.createContriProjectAPI
 );
 module.exports = router;
-// router.get("/", async (req, res, next) => {
-//   try {
-//     const posts = await Post.findAll({
-//       include: {
-//         model: User,
-//         attributes: ["id"],
-//       },
-//       order: [["createdAt", "DESC"]],
-//     });
-//     res.render("main", {
-//       title: "collusic",
-//       twits: posts,
-//     });
-//   } catch (err) {
-//     console.error(err);
-//     next(err);
-//   }
-// });
-
-// router.get("/mypage", isLoggedIn, async (req, res, next) => {
-//   try {
-//     const myinfo = await User.findOne({
-//       attributes: ["email", "introduce"],
-//       where: {
-//         email: req.user.email,
-//       },
-//     });
-//     res.status(200).json({
-//       email: myinfo,
-//     });
-//   } catch (err) {
-//     res.status(400).json({
-//       error: err,
-//     });
-//   }
-// });
-
-// router.get("/join", isNotLoggedIn, (req, res) => {
-//   res.render("join", { title: "회원가입 - collusic" });
-// });
-
-// router.get("/", async (req, res, next) => {
-//   try {
-//     const posts = await Post.findAll({
-//       include: {
-//         model: User,
-//         attributes: ["id", "nick"],
-//       },
-//       order: [["createdAt", "DESC"]],
-//     });
-//     res.render("main", {
-//       title: "collusic",
-//       twits: posts,
-//     });
-//   } catch (err) {
-//     console.error(err);
-//     next(err);
-//   }
-// });
diff --git a/backend/routes/post.js b/backend/routes/post.js
deleted file mode 100644
index 579a10f..0000000
--- a/backend/routes/post.js
+++ /dev/null
@@ -1,62 +0,0 @@
-const express = require("express");
-const multer = require("multer");
-const path = require("path");
-const fs = require("fs");
-
-const { Post, Contri } = require("../models");
-const { isLoggedIn } = require("./middlewares");
-
-const router = express.Router();
-
-try {
-  fs.readdirSync("uploads");
-} catch (error) {
-  console.error("uploads 폴더가 없어 uploads 폴더를 생성합니다.");
-  fs.mkdirSync("uploads");
-}
-
-const upload = multer({
-  storage: multer.diskStorage({
-    destination(req, file, cb) {
-      cb(null, "uploads/");
-    },
-    filename(req, file, cb) {
-      const ext = path.extname(file.originalname);
-      cb(null, path.basename(file.originalname, ext) + Date.now() + ext);
-    },
-  }),
-  limits: { fileSize: 5 * 1024 * 1024 },
-});
-
-router.post("/img", isLoggedIn, upload.single("img"), (req, res) => {
-  console.log(req.file);
-  res.json({ url: `/img/${req.file.filename}` });
-});
-
-const upload2 = multer();
-router.post("/", isLoggedIn, upload2.none(), async (req, res, next) => {
-  try {
-    const post = await Post.create({
-      content: req.body.content,
-      img: req.body.url,
-      UserId: req.user.id,
-    });
-    const hashtags = req.body.content.match(/#[^\s#]*/g);
-    if (hashtags) {
-      const result = await Promise.all(
-        hashtags.map((tag) => {
-          return Hashtag.findOrCreate({
-            where: { title: tag.slice(1).toLowerCase() },
-          });
-        })
-      );
-      await post.addHashtags(result.map((r) => r[0]));
-    }
-    res.redirect("/");
-  } catch (error) {
-    console.error(error);
-    next(error);
-  }
-});
-
-module.exports = router;
diff --git a/backend/views/error.html b/backend/views/error.html
deleted file mode 100644
index 87cc731..0000000
--- a/backend/views/error.html
+++ /dev/null
@@ -1,7 +0,0 @@
-{% extends 'layout.html' %}
-
-{% block content %}
-  <h1>{{message}}</h1>
-  <h2>{{error.status}}</h2>
-  <pre>{{error.stack}}</pre>
-{% endblock %}
diff --git a/backend/views/join.html b/backend/views/join.html
deleted file mode 100644
index 621a9e3..0000000
--- a/backend/views/join.html
+++ /dev/null
@@ -1,29 +0,0 @@
-{% extends 'layout.html' %}
-
-{% block content %}
-  <div class="timeline">
-    <form id="join-form" action="/auth/join" method="post">
-      <div class="input-group">
-        <label for="join-email">이메일</label>
-        <input id="join-email" type="email" name="email"></div>
-      <div class="input-group">
-        <label for="join-nick">닉네임</label>
-        <input id="join-nick" type="text" name="nick"></div>
-      <div class="input-group">
-        <label for="join-password">비밀번호</label>
-        <input id="join-password" type="password" name="password">
-      </div>
-      <button id="join-btn" type="submit" class="btn">회원가입</button>
-    </form>
-  </div>
-{% endblock %}
-
-{% block script %}
-  <script>
-    window.onload = () => {
-      if (new URL(location.href).searchParams.get('error')) {
-        alert('이미 존재하는 이메일입니다.');
-      }
-    };
-  </script>
-{% endblock %}
diff --git a/backend/views/layout.html b/backend/views/layout.html
deleted file mode 100644
index c46c369..0000000
--- a/backend/views/layout.html
+++ /dev/null
@@ -1,53 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8">
-    <title>{{title}}</title>
-    <meta name="viewport" content="width=device-width, user-scalable=no">
-    <meta http-equiv="X-UA-Compatible" content="IE=edge">
-    <link rel="stylesheet" href="/main.css">
-  </head>
-  <body>
-    <div class="container">
-      <div class="profile-wrap">
-        <div class="profile">
-          {% if user and user.id %}
-            <div class="user-name">{{'안녕하세요! ' + user.nick + '님'}}</div>
-          <input id="my-id" type="hidden" value="{{user.id}}">
-          <a id="my-profile" href="/profile" class="btn">내 프로필</a>
-          <a id="logout" href="/auth/logout" class="btn">로그아웃</a>
-        {% else %}
-          <form id="login-form" action="/auth/login" method="post">
-            <div class="input-group">
-              <label for="email">이메일</label>
-              <input id="email" type="email" name="email" required autofocus>
-            </div>
-            <div class="input-group">
-              <label for="password">비밀번호</label>
-              <input id="password" type="password" name="password" required>
-            </div>
-            <a id="join" href="/join" class="btn">회원가입</a>
-            <button id="login" type="submit" class="btn">로그인</button>
-          </form>
-        {% endif %}
-        </div>
-        <footer>
-          Made by&nbsp;
-          <a href="https://www.naver.com" target="_blank">dongda</a>
-        </footer>
-      </div>
-      {% block content %}
-      {% endblock %}
-    </div>
-    <script src="https://unpkg.com/axios/dist/axios.min.js"></script>
-    <script>
-      window.onload = () => {
-        if (new URL(location.href).searchParams.get('loginError')) {
-          alert(new URL(location.href).searchParams.get('loginError'));
-        }
-      };
-    </script>
-    {% block script %}
-    {% endblock %}
-  </body>
-</html>
diff --git a/backend/views/main.html b/backend/views/main.html
deleted file mode 100644
index 6cda02e..0000000
--- a/backend/views/main.html
+++ /dev/null
@@ -1,65 +0,0 @@
-{% extends 'layout.html' %}
-
-{% block content %}
-    <div class="timeline">
-      {% if user %}
-        <div>
-          <form id="twit-form" action="/post" method="post" enctype="multipart/form-data">
-            <div class="input-group">
-              <textarea id="twit" name="content" maxlength="140"></textarea>
-            </div>
-            <div class="img-preview">
-              <img id="img-preview" src="" style="display: none;" width="250" alt="미리보기">
-              <input id="img-url" type="hidden" name="url">
-            </div>
-            <div>
-              <label id="img-label" for="img">사진 업로드</label>
-              <input id="img" type="file" accept="image/*">
-              <button id="twit-btn" type="submit" class="btn">올리기</button>
-            </div>
-          </form>
-        </div>
-      {% endif %}
-      <div class="twits">
-        <form id="hashtag-form" action="/hashtag">
-          <input type="text" name="hashtag" placeholder="태그 검색">
-          <button class="btn">검색</button>
-        </form>
-        {% for twit in twits %}
-          <div class="twit">
-            <input type="hidden" value="{{twit.User.id}}" class="twit-user-id">
-            <input type="hidden" value="{{twit.id}}" class="twit-id">
-            <div class="twit-author">{{twit.User.nick}}</div>
-            {% if not followerIdList.includes(twit.User.id) and twit.User.id !== user.id %}
-              <button class="twit-follow">팔로우하기</button>
-            {% endif %}
-            <div class="twit-content">{{twit.content}}</div>
-            {% if twit.img %}
-              <div class="twit-img"><img src="{{twit.img}}" alt="섬네일"></div>
-            {% endif %}
-          </div>
-        {% endfor %}
-      </div>
-    </div>
-{% endblock %}
-
-{% block script %}
-  <script>
-    if (document.getElementById('img')) {
-      document.getElementById('img').addEventListener('change', function(e) {
-        const formData = new FormData();
-        console.log(this, this.files);
-        formData.append('img', this.files[0]);
-        axios.post('/post/img', formData)
-          .then((res) => {
-            document.getElementById('img-url').value = res.data.url;
-            document.getElementById('img-preview').src = res.data.url;
-            document.getElementById('img-preview').style.display = 'inline';
-          })
-          .catch((err) => {
-            console.error(err);
-          });
-      });
-    };
-  </script>
-{% endblock %}