diff --git a/haeseung/.gitignore b/haeseung/.gitignore
new file mode 100644
index 0000000..75ac897
--- /dev/null
+++ b/haeseung/.gitignore
@@ -0,0 +1,137 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+.pnpm-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Snowpack dependency directory (https://snowpack.dev/)
+web_modules/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional stylelint cache
+.stylelintcache
+
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variable files
+.env
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+.parcel-cache
+
+# Next.js build output
+.next
+out
+
+# Nuxt.js build / generate output
+.nuxt
+dist
+
+# Gatsby files
+.cache/
+# Comment in the public line in if your project uses Gatsby and not Next.js
+# https://nextjs.org/blog/next-9-1#public-directory-support
+# public
+
+# vuepress build output
+.vuepress/dist
+
+# vuepress v2.x temp and cache directory
+.temp
+.cache
+
+# Docusaurus cache and generated files
+.docusaurus
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# TernJS port file
+.tern-port
+
+# Stores VSCode versions used for testing VSCode extensions
+.vscode-test
+
+# yarn v2
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.*
+
+# dependency directories
+node_modules/
+
+# dotenv environment variable files
+.env
+.env.*
\ No newline at end of file
diff --git a/haeseung/.vscode/settings.json b/haeseung/.vscode/settings.json
new file mode 100644
index 0000000..baad46d
--- /dev/null
+++ b/haeseung/.vscode/settings.json
@@ -0,0 +1,3 @@
+{
+  "javascript.preferences.importModuleSpecifierEnding": "js"
+}
\ No newline at end of file
diff --git a/haeseung/package-lock.json b/haeseung/package-lock.json
new file mode 100644
index 0000000..f72366e
--- /dev/null
+++ b/haeseung/package-lock.json
@@ -0,0 +1,1324 @@
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diff --git a/haeseung/package.json b/haeseung/package.json
new file mode 100644
index 0000000..cce5c42
--- /dev/null
+++ b/haeseung/package.json
@@ -0,0 +1,24 @@
+{
+  "name": "haeseung",
+  "type": "module",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "start": "node src/index.js",
+    "dev": "nodemon --exec node src/index.js"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "cors": "^2.8.5",
+    "dotenv": "^16.4.5",
+    "express": "^5.0.0",
+    "http-status-codes": "^2.3.0",
+    "mysql2": "^3.11.3"
+  },
+  "devDependencies": {
+    "nodemon": "^3.1.7"
+  }
+}
diff --git a/haeseung/src/controllers/user.controller.js b/haeseung/src/controllers/user.controller.js
new file mode 100644
index 0000000..acce080
--- /dev/null
+++ b/haeseung/src/controllers/user.controller.js
@@ -0,0 +1,11 @@
+import { StatusCodes } from "http-status-codes";
+import { bodyToUser } from "../dtos/user.dto.js";
+import { userSignUp } from "../services/user.service.js";
+
+export const handleUserSignUp = async (req, res, next) => {
+  console.log("회원가입을 요청했습니다!");
+  console.log("body:", req.body); // 값이 잘 들어오나 확인하기 위한 테스트용
+
+  const user = await userSignUp(bodyToUser(req.body));
+  res.status(StatusCodes.OK).json({ result: user });
+};
diff --git a/haeseung/src/db.config.js b/haeseung/src/db.config.js
new file mode 100644
index 0000000..50acaab
--- /dev/null
+++ b/haeseung/src/db.config.js
@@ -0,0 +1,17 @@
+import mysql from "mysql2/promise";
+import dotenv from "dotenv";
+
+dotenv.config();
+
+export const pool = mysql.createPool({
+  host: process.env.DB_HOST, // mysql의 hostname
+  user: process.env.DB_USER, // user 이름
+  port: process.env.DB_PORT, // 포트 번호
+  database: process.env.DB_NAME, // 데이터베이스 이름
+  password: process.env.DB_PASSWORD, // 비밀번호
+  waitForConnections: true,
+  // Pool에 획득할 수 있는 connection이 없을 때,
+  // true면 요청을 queue에 넣고 connection을 사용할 수 있게 되면 요청을 실행하며, false이면 즉시 오류를 내보내고 다시 요청
+  connectionLimit: 10, // 몇 개의 커넥션을 가지게끔 할 것인지
+  queueLimit: 0, // getConnection에서 오류가 발생하기 전에 Pool에 대기할 요청의 개수 한도
+});
diff --git a/haeseung/src/dtos/user.dto.js b/haeseung/src/dtos/user.dto.js
new file mode 100644
index 0000000..a358b08
--- /dev/null
+++ b/haeseung/src/dtos/user.dto.js
@@ -0,0 +1,24 @@
+export const bodyToUser = (body) => {
+    const birth = new Date(body.birth);
+  
+    return {
+      email: body.email,
+      name: body.name,
+      gender: body.gender,
+      birth,
+      address: body.address || "",
+      phoneNumber: body.phoneNumber,
+      preferences: body.preferences,
+    };
+  };
+
+export const responseFromUser = (user) => {
+    return {
+        email: user[0].email,
+        name: user[0].name,
+        gender: user[0].gender,
+        birth: user[0].birth,
+        address: user[0].address,
+        phoneNumber: user[0].phone_number
+    }
+}
\ No newline at end of file
diff --git a/haeseung/src/index.js b/haeseung/src/index.js
new file mode 100644
index 0000000..491c5a2
--- /dev/null
+++ b/haeseung/src/index.js
@@ -0,0 +1,24 @@
+import cors from "cors";
+import dotenv from "dotenv";
+import express from "express";
+import { handleUserSignUp } from "./controllers/user.controller.js";
+
+dotenv.config();
+
+const app = express();
+const port = process.env.PORT;
+
+app.use(cors()); // cors 방식 허용
+app.use(express.static("public")); // 정적 파일 접근
+app.use(express.json()); // request의 본문을 json으로 해석할 수 있도록 함 (JSON 형태의 요청 body를 파싱하기 위함)
+app.use(express.urlencoded({ extended: false })); // 단순 객체 문자열 형태로 본문 데이터 해석
+
+app.get("/", (req, res) => {
+  res.send("Hello World!");
+});
+
+app.post("/api/users/signup", handleUserSignUp);
+
+app.listen(port, () => {
+  console.log(`Example app listening on port ${port}`);
+});
\ No newline at end of file
diff --git a/haeseung/src/repositories/user.repository.js b/haeseung/src/repositories/user.repository.js
new file mode 100644
index 0000000..75aea07
--- /dev/null
+++ b/haeseung/src/repositories/user.repository.js
@@ -0,0 +1,107 @@
+import { pool } from "../db.config.js";
+
+// User 데이터 삽입
+export const addUser = async (data) => {
+  const conn = await pool.getConnection();
+
+  try {
+    const [confirm] = await pool.query(
+      `SELECT EXISTS(SELECT * FROM user WHERE email = ?) as isExistEmail;`,
+      data.email
+    );
+
+    if (confirm[0].isExistEmail) {
+      return null;
+    }
+
+    const [result] = await pool.query(
+      `INSERT INTO user (email, name, gender, birth, address, phone_number) VALUES (?, ?, ?, ?, ?, ?);`,
+      [
+        data.email,
+        data.name,
+        data.gender,
+        data.birth,
+        data.address,
+        data.phoneNumber,
+      ]
+    );
+    return result.insertId;
+  } catch (err) {
+    throw new Error(
+      `오류가 발생했어요. 요청 파라미터를 확인해주세요. (${err})`
+    );
+  } finally {
+    conn.release();
+  }
+};
+
+// 사용자 정보 얻기
+export const getUser = async (userId) => {
+  const conn = await pool.getConnection();
+
+  try {
+    const [user, _] = await pool.query(`SELECT * FROM user WHERE id = ?;`, userId);
+
+    if (user.length == 0) {
+      return null;
+    }
+
+    return user;
+  } catch (err) {
+    throw new Error(
+      `오류가 발생했어요. 요청 파라미터를 확인해주세요. (${err})`
+    );
+  } finally {
+    conn.release();
+  }
+};
+
+// 음식 선호 카테고리 매핑
+export const setPreference = async (userId, foodCategory) => {
+
+  const conn = await pool.getConnection();
+  
+  // 음식 카테고리에서 ID 뽑아오기
+  try {
+    const [category, _] = await pool.query(`SELECT * FROM food_category WHERE name = ?;`, foodCategory);
+
+    if (category.length == 0) {
+      return null;
+    }
+    console.log(category[0].id)
+    await pool.query(
+      `INSERT INTO user_prefer (category_id, user_id) VALUES (?, ?);`,
+      [category[0].id, userId]
+    );
+
+    return;
+  } catch (err) {
+    throw new Error(
+      `오류가 발생했어요. 요청 파라미터를 확인해주세요. (${err})`
+    );
+  } finally {
+    conn.release();
+  }
+};
+
+// 사용자 선호 카테고리 반환
+export const getUserPreferencesByUserId = async (userId) => {
+  const conn = await pool.getConnection();
+
+  try {
+    const [preferences] = await pool.query(
+      "SELECT ufc.id, ufc.category_id, ufc.user_id, fcl.name " +
+        "FROM user_prefer ufc JOIN food_category fcl on ufc.category_id = fcl.id " +
+        "WHERE ufc.user_id = ? ORDER BY ufc.category_id ASC;",
+      userId
+    );
+
+    return preferences;
+  } catch (err) {
+    throw new Error(
+      `오류가 발생했어요. 요청 파라미터를 확인해주세요. (${err})`
+    );
+  } finally {
+    conn.release();
+  }
+};
diff --git a/haeseung/src/services/user.service.js b/haeseung/src/services/user.service.js
new file mode 100644
index 0000000..9791460
--- /dev/null
+++ b/haeseung/src/services/user.service.js
@@ -0,0 +1,31 @@
+import { responseFromUser } from "../dtos/user.dto.js";
+import {
+  addUser,
+  getUser,
+  getUserPreferencesByUserId,
+  setPreference,
+} from "../repositories/user.repository.js";
+
+export const userSignUp = async (data) => {
+  const joinUserId = await addUser({
+    email: data.email,
+    name: data.name,
+    gender: data.gender,
+    birth: data.birth,
+    address: data.address,
+    phoneNumber: data.phoneNumber,
+  });
+
+  if (joinUserId === null) {
+    throw new Error("이미 존재하는 이메일입니다.");
+  }
+
+  for (const preference of data.preferences) {
+    await setPreference(joinUserId, preference);
+  }
+
+  const user = await getUser(joinUserId);
+  const preferences = await getUserPreferencesByUserId(joinUserId);
+
+  return responseFromUser(user);
+};
\ No newline at end of file