diff --git a/app.js b/app.js
index fa94532..fe10396 100644
--- a/app.js
+++ b/app.js
@@ -1,22 +1,37 @@
-const createError = require('http-errors')
-const express = require('express')
-const path = require('path')
-const logger = require('morgan')
-const cors = require('cors')
-const session = require('express-session')
-const { RedisStore } = require('connect-redis')
-const Redis = require('ioredis')
-const cookieParser = require('cookie-parser')
-const indexRouter = require('./routes/index')
-const userRouter = require('./routes/userRouter')
-const accountRouter = require('./routes/accountRouter')
-require('dotenv').config()
+import createError from 'http-errors'
+
+import express from 'express'
+
+import path from 'path'
+
+import logger from 'morgan'
+
+import cors from 'cors'
+
+import session from 'express-session'
+
+import { RedisStore } from 'connect-redis'
+
+import Redis from 'ioredis'
+
+import cookieParser from 'cookie-parser'
+
+import indexRouter from './routes/index'
+
+import userRouter from './routes/userRouter'
+
+import accountRouter from './routes/accountRouter'
+
+import { config } from 'dotenv'
 
 // mongodb数据库连接
-const { connectMongoDB } = require('./config/mongodbConfig')
-const loginUtil = require('./utils/loginUtil')
-const { HTTP_STATUS } = require('./common/constant/httpStatus')
+import { connectMongoDB } from './config/mongodbConfig'
 
+import { HTTP_STATUS } from './common/constant/httpStatus'
+
+import loginUtil from './utils/loginUtil'
+
+config()
 // 初始化 Redis 客户端
 const redisClient = new Redis({
   host: process.env.REDIS_HOST,
diff --git a/common/constant/httpStatus.js b/common/constant/httpStatus.js
index b0b01d3..5abb9eb 100644
--- a/common/constant/httpStatus.js
+++ b/common/constant/httpStatus.js
@@ -1,7 +1,7 @@
 /**
  * HTTP 状态码常量
  */
-const HTTP_STATUS = {
+export const HTTP_STATUS = {
   // 信息响应 (100–199)
   /** @type {number} 继续 */
   CONTINUE: 100,
@@ -67,4 +67,4 @@ const HTTP_STATUS = {
   GATEWAY_TIMEOUT: 504
 }
 
-module.exports = { HTTP_STATUS }
+export default { HTTP_STATUS }
diff --git a/common/web/fetchResult.js b/common/web/fetchResult.js
index 1745318..7682c1f 100644
--- a/common/web/fetchResult.js
+++ b/common/web/fetchResult.js
@@ -16,4 +16,4 @@ class FetchResult {
   }
 }
 
-module.exports = FetchResult
+export default FetchResult
diff --git a/config/messages.js b/config/messages.js
index 3c59ada..9c5e421 100644
--- a/config/messages.js
+++ b/config/messages.js
@@ -1,5 +1,5 @@
 // messages.js
-module.exports = {
+export default {
   user: {
     // 成功消息
     created: 'user created',
@@ -7,6 +7,7 @@ module.exports = {
     deleted: 'user deleted',
     login: 'login successful',
     logout: 'logout successful',
+    exists: 'user exists',
 
     // 错误消息
     not_found: 'user not found',
diff --git a/config/mongodbConfig.js b/config/mongodbConfig.js
index 3b36d6b..69bdf43 100644
--- a/config/mongodbConfig.js
+++ b/config/mongodbConfig.js
@@ -1,6 +1,10 @@
-const mongoose = require('mongoose')
-const logger = require('morgan')
-require('dotenv').config()
+import mongoose from 'mongoose'
+
+import logger from 'morgan'
+
+import { config } from 'dotenv'
+
+config()
 
 // 使用环境变量存储敏感信息
 const account = process.env.MONGO_ACCOUNT
@@ -10,7 +14,7 @@ const port = process.env.MONGO_PORT || '27017'
 
 let isConnected = false
 
-exports.connectMongoDB = async function () {
+export async function connectMongoDB() {
   if (process.env.NODE_ENV === 'development') {
     logger(account, password, host, port)
   }
diff --git a/controllers/userController.js b/controllers/userController.js
index 53f7d4a..b19ff3c 100644
--- a/controllers/userController.js
+++ b/controllers/userController.js
@@ -1,12 +1,12 @@
-const { body, validationResult } = require('express-validator')
-const logger = require('morgan')
-const userService = require('../services/userService')
-const FetchResult = require('../common/web/fetchResult')
-const messages = require('../config/messages')
-const { HTTP_STATUS } = require('../common/constant/httpStatus')
-const { SearchQuery } = require('../models/search')
+import { body, validationResult } from 'express-validator'
+import logger from 'morgan'
+import userService from '../services/userService'
+import FetchResult from '../common/web/fetchResult'
+import messages from '../config/messages'
+import { HTTP_STATUS } from '../common/constant/httpStatus'
+import { SearchQuery } from '../models/search'
 
-exports.getAllUsers = async (res) => {
+export async function getAllUsers(res) {
   try {
     const users = await userService.getUserList()
     return FetchResult.formatResult(res, HTTP_STATUS.ACCEPTED, 'success', users)
@@ -15,7 +15,7 @@ exports.getAllUsers = async (res) => {
   }
 }
 
-exports.findUserList = async (req, res) => {
+export async function findUserList(req, res) {
   try {
     const { page, size, sort } = req.query
     const search = new SearchQuery({ page: page, size: size, sort: sort })
@@ -28,7 +28,7 @@ exports.findUserList = async (req, res) => {
   }
 }
 
-exports.createUser = [
+export const createUser = [
   body('account').isLength({ min: 3 }).withMessage('Account must be at least 3 characters long'),
   body('account').isEmpty().withMessage('Account is required'),
   body('password').isLength({ min: 6 }).withMessage('Password must be at least 6 characters long'),
@@ -63,7 +63,7 @@ exports.createUser = [
   }
 ]
 
-exports.login = [
+export const login = [
   body('account').notEmpty().withMessage('Account is required'),
   body('password').notEmpty().withMessage('Password is required'),
   async (req, res, next) => {
@@ -99,7 +99,7 @@ exports.login = [
   }
 ]
 
-exports.logout = async (req, res) => {
+export async function logout(req, res) {
   try {
     req.session.destroy()
     return FetchResult.formatResult(res, HTTP_STATUS.OK, messages.user.logout)
@@ -109,7 +109,7 @@ exports.logout = async (req, res) => {
   }
 }
 
-exports.getUserExist = async (req, res) => {
+export async function getUserExists(req, res) {
   try {
     const { account } = req.query
 
@@ -118,7 +118,7 @@ exports.getUserExist = async (req, res) => {
     if (!exist) {
       return FetchResult.formatResult(res, HTTP_STATUS.NOT_FOUND, messages.user.not_found)
     }
-    return FetchResult.formatResult(res, HTTP_STATUS.ACCEPTED, messages.user.exist)
+    return FetchResult.formatResult(res, HTTP_STATUS.ACCEPTED, messages.user.exists)
   } catch (err) {
     logger('Error checking user existence: ', err)
     return FetchResult.formatResult(res, HTTP_STATUS.INTERNAL_SERVER_ERROR, 'Internal server error')
diff --git a/models/Search.js b/models/Search.js
index 27cc3db..e9ffe57 100644
--- a/models/Search.js
+++ b/models/Search.js
@@ -1,4 +1,4 @@
-class SearchQuery {
+export class SearchQuery {
   constructor({ size, page, sort, filters }) {
     this.size = size
     this.page = page
@@ -26,4 +26,4 @@ class SearchResult {
   }
 }
 
-module.exports = { SearchQuery, SearchResult }
+export default { SearchQuery, SearchResult }
diff --git a/package.json b/package.json
index 54c163e..4d19a5e 100644
--- a/package.json
+++ b/package.json
@@ -2,6 +2,7 @@
   "name": "express",
   "version": "0.0.0",
   "private": true,
+  "type": "module",
   "scripts": {
     "start": "node ./bin/www",
     "nodemon": "nodemon ./bin/www",
diff --git a/routes/accountRouter.js b/routes/accountRouter.js
index 8e1f7c4..27285e1 100644
--- a/routes/accountRouter.js
+++ b/routes/accountRouter.js
@@ -1,9 +1,10 @@
 // routes/userRoutes.js
-const express = require('express')
-const userController = require('../controllers/userController')
+import express from 'express'
+
+import userController from '../controllers/userController'
 
 const router = express.Router()
 
 router.get('/', userController.getUserExist)
 
-module.exports = router
+export default router
diff --git a/routes/index.js b/routes/index.js
index 92f258b..9f39dd0 100644
--- a/routes/index.js
+++ b/routes/index.js
@@ -1,7 +1,8 @@
-const express = require('express')
-const router = express.Router()
-const userController = require('../controllers/userController')
+import express from 'express'
 
+import userController from '../controllers/userController'
+
+const router = express.Router()
 router.get('/', function (req, res) {
   if (!req.session.views) {
     req.session.views = 1
@@ -15,4 +16,4 @@ router.post('/login', userController.login)
 
 router.post('/logout', userController.logout)
 
-module.exports = router
+export default router
diff --git a/routes/userRouter.js b/routes/userRouter.js
index 12aafb0..7fbe640 100644
--- a/routes/userRouter.js
+++ b/routes/userRouter.js
@@ -1,6 +1,7 @@
 // routes/userRoutes.js
-const express = require('express')
-const userController = require('../controllers/userController')
+import userController from '../controllers/userController'
+
+import express from 'express'
 
 const router = express.Router()
 
@@ -8,4 +9,4 @@ router.get('/', userController.getAllUsers)
 router.post('/', userController.createUser)
 router.get('/list', userController.findUserList)
 
-module.exports = router
+export default router
diff --git a/services/userService.js b/services/userService.js
index 745d1f8..d111894 100644
--- a/services/userService.js
+++ b/services/userService.js
@@ -1,7 +1,7 @@
-const userMapper = require('../repositories/userRepository')
-const logger = require('morgan')
-const messages = require('../config/messages')
-const { comparePassword } = require('../utils/hashUtils')
+import userMapper from '../repositories/userRepository'
+import logger from 'morgan'
+import messages from '../config/messages'
+import { comparePassword } from '../utils/hashUtils'
 
 /**
  * 用户登录
@@ -10,7 +10,7 @@ const { comparePassword } = require('../utils/hashUtils')
  * @returns {Promise<Object>} - 登录成功返回用户信息
  * @throws {Error} - 如果用户不存在或密码不正确
  */
-exports.login = async (account, password) => {
+export async function login(account, password) {
   const user = await userMapper.selectUserByAccount(account)
 
   // 用户不存在
@@ -19,7 +19,7 @@ exports.login = async (account, password) => {
   }
 
   // 密码不匹配
-  const isMatch = await comparePassword(password, user.password)
+  const isMatch = comparePassword(password, user.password)
   if (!isMatch) {
     throw new Error(messages.user.passwordIncorrect)
   }
@@ -36,16 +36,16 @@ exports.login = async (account, password) => {
  * @param {string} account
  * @returns {Promise<boolean>}
  */
-exports.getUserExists = async (account) => {
+export async function getUserExists(account) {
   return userMapper.selectUserByAccountExist(account)
 }
 
 // Removed the unnecessary try-catch block and simplified the function
-exports.getAllUser = async () => {
+export async function getAllUser() {
   return await userMapper.selectAllUser()
 }
 
-exports.getUserList = async (searchQuery) => {
+export async function getUserList(searchQuery) {
   return userMapper.selectUserList(searchQuery)
 }
 
@@ -55,7 +55,7 @@ exports.getUserList = async (searchQuery) => {
  * @returns {Promise<Object>} - 创建成功的用户信息
  * @throws {Error} - 如果用户已存在或事务失败
  */
-exports.createUser = async (user) => {
+export async function createUser(user) {
   const { account } = user
   const session = await userMapper.startTransaction()
 
diff --git a/utils/hashUtils.js b/utils/hashUtils.js
index 5995c22..15aa4e7 100644
--- a/utils/hashUtils.js
+++ b/utils/hashUtils.js
@@ -1,4 +1,4 @@
-const bcrypt = require('bcrypt')
+import bcrypt from 'bcrypt'
 
 /**
  * 加密密码
@@ -15,8 +15,8 @@ async function hashPassword(password) {
  * @param {string} hashedPassword 哈希密码
  * @returns {boolean} 是否匹配
  */
-async function comparePassword(password, hashedPassword) {
+export async function comparePassword(password, hashedPassword) {
   return bcrypt.compare(password, hashedPassword)
 }
 
-module.exports = { hashPassword, comparePassword }
+export default { hashPassword, comparePassword }
diff --git a/utils/loginUtil.js b/utils/loginUtil.js
index 588d112..a75b8f4 100644
--- a/utils/loginUtil.js
+++ b/utils/loginUtil.js
@@ -1,7 +1,8 @@
-const FetchResult = require('../common/web/fetchResult.js')
-const { HTTP_STATUS } = require('../common/constant/httpStatus.js')
+import FetchResult from '../common/web/fetchResult.js'
 
-exports.authenticateSession = async (req, res, next) => {
+import { HTTP_STATUS } from '../common/constant/httpStatus.js'
+
+export async function authenticateSession(req, res, next) {
   if (req.session.user) {
     next()
   } else {