diff --git a/package.json b/package.json
index 07d7828e..b4af1ba6 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,7 @@
     "mathjs": "^13.0.2",
     "mongodb": "^6.8.0",
     "next": "14.2.3",
+    "next-international": "^1.2.4",
     "react": "^18",
     "react-datepicker": "^7.3.0",
     "react-dom": "^18",
diff --git a/src/app/[locale]/LocaleProvider.js b/src/app/[locale]/LocaleProvider.js
new file mode 100644
index 00000000..b4649135
--- /dev/null
+++ b/src/app/[locale]/LocaleProvider.js
@@ -0,0 +1,11 @@
+'use client'
+
+import { I18nProviderClient } from '@/locales/client'
+
+export function LocaleProvider({ locale, children }) {
+  return (
+    <I18nProviderClient locale={locale} fallback={<p>Loading...</p>}>
+      {children}
+    </I18nProviderClient>
+  )
+}
diff --git a/src/app/changelog/changelog.module.css b/src/app/[locale]/changelog copy/changelog.module.css
similarity index 100%
rename from src/app/changelog/changelog.module.css
rename to src/app/[locale]/changelog copy/changelog.module.css
diff --git a/src/app/changelog/page.jsx b/src/app/[locale]/changelog copy/page.jsx
similarity index 100%
rename from src/app/changelog/page.jsx
rename to src/app/[locale]/changelog copy/page.jsx
diff --git a/src/app/[locale]/changelog/changelog.module.css b/src/app/[locale]/changelog/changelog.module.css
new file mode 100644
index 00000000..273a4a34
--- /dev/null
+++ b/src/app/[locale]/changelog/changelog.module.css
@@ -0,0 +1,4 @@
+.test {
+  @apply bg-red-500;
+  @apply text-2xl;
+}
diff --git a/src/app/[locale]/changelog/page.jsx b/src/app/[locale]/changelog/page.jsx
new file mode 100644
index 00000000..ad626beb
--- /dev/null
+++ b/src/app/[locale]/changelog/page.jsx
@@ -0,0 +1,73 @@
+'use client'
+
+import { Button, Table, TableBody, TableCell, TableColumn, TableHeader, TableRow } from '@nextui-org/react'
+import Hero from '@/components/Hero'
+import QSelect from '@/components/ui/QSelect'
+import styles from './changelog.module.css'
+import { get } from '@/lib/Axios'
+
+export default function changelogPage() {
+  const testVar = process.env.NEXT_PUBLIC_TEST
+
+  const handleUsers = async () => {
+    const users = await get('/api/user/find-all')
+    console.log(users)
+  }
+
+  const data = [
+    {
+      id: 1,
+      author: 'SWYOO',
+      contents: '버튼 정리(템플릿 적용)',
+      date: '2024.07.16',
+    },
+    {
+      id: 2,
+      author: 'SWYOO',
+      contents: 'README.md 파일 이미지 경로 수정',
+      date: '2024.07.17',
+    },
+    {
+      id: 3,
+      author: 'SWYOO',
+      contents: '',
+      date: '',
+    },
+  ]
+  return (
+    <>
+      <Hero title="Change log" />
+      <div className={styles.test}>이 영역은 테스트입니다.</div>
+      <div>
+        <Table isStriped>
+          <TableHeader>
+            <TableColumn>DATE</TableColumn>
+            <TableColumn>NAME</TableColumn>
+            <TableColumn>CONTENTS</TableColumn>
+          </TableHeader>
+          <TableBody>
+            {data.map((item) => (
+              <TableRow key={item.id}>
+                <TableCell>{item.date}</TableCell>
+                <TableCell>{item.author}</TableCell>
+                <TableCell>{item.contents}</TableCell>
+              </TableRow>
+            ))}
+          </TableBody>
+        </Table>
+      </div>
+      <div className="m-2">
+        <QSelect />
+      </div>
+      <div className="w-full bg-orange-300 m-2">{testVar}</div>
+      <div>
+        <div className="m-2">
+          <Button onClick={handleUsers}>Button</Button>
+        </div>
+      </div>
+      <div className="test">
+        <p className="text-white">Sass 테스트입니다.</p>
+      </div>
+    </>
+  )
+}
diff --git a/src/app/community/archive/page.jsx b/src/app/[locale]/community/archive/page.jsx
similarity index 100%
rename from src/app/community/archive/page.jsx
rename to src/app/[locale]/community/archive/page.jsx
diff --git a/src/app/community/faq/page.jsx b/src/app/[locale]/community/faq/page.jsx
similarity index 100%
rename from src/app/community/faq/page.jsx
rename to src/app/[locale]/community/faq/page.jsx
diff --git a/src/app/community/notice/page.jsx b/src/app/[locale]/community/notice/page.jsx
similarity index 100%
rename from src/app/community/notice/page.jsx
rename to src/app/[locale]/community/notice/page.jsx
diff --git a/src/app/[locale]/error.jsx b/src/app/[locale]/error.jsx
new file mode 100644
index 00000000..07d75e7e
--- /dev/null
+++ b/src/app/[locale]/error.jsx
@@ -0,0 +1,15 @@
+'use client'
+
+export default function ServerError() {
+  return (
+    <section className="bg-white dark:bg-gray-900">
+      <div className="py-8 px-4 mx-auto max-w-screen-xl lg:py-16 lg:px-6">
+        <div className="mx-auto max-w-screen-sm text-center">
+          <h1 className="mb-4 text-7xl tracking-tight font-extrabold lg:text-9xl text-primary-600 dark:text-primary-500">500</h1>
+          <p className="mb-4 text-3xl tracking-tight font-bold text-gray-900 md:text-4xl dark:text-white">Internal Server Error.</p>
+          <p className="mb-4 text-lg font-light text-gray-500 dark:text-gray-400">We are already working to solve the problem. </p>
+        </div>
+      </div>
+    </section>
+  )
+}
diff --git a/src/app/intro/page.jsx b/src/app/[locale]/intro/page.jsx
similarity index 82%
rename from src/app/intro/page.jsx
rename to src/app/[locale]/intro/page.jsx
index 840b1f93..64a7c6ab 100644
--- a/src/app/intro/page.jsx
+++ b/src/app/[locale]/intro/page.jsx
@@ -6,7 +6,6 @@ import Intro from '@/components/Intro'
 export default function IntroPage() {
   return (
     <>
-      <Hero title="Common Components Intro Page" />
       <div className="container mx-auto p-4 m-4 border">
         <Intro />
       </div>
diff --git a/src/app/[locale]/layout.js b/src/app/[locale]/layout.js
new file mode 100644
index 00000000..00f84991
--- /dev/null
+++ b/src/app/[locale]/layout.js
@@ -0,0 +1,13 @@
+'use client'
+
+import { useCurrentLocale } from '@/locales/client'
+import { LocaleProvider } from './LocaleProvider'
+
+export default function LocaleLayout({ children }) {
+  const locale = useCurrentLocale()
+  return (
+    <>
+      <LocaleProvider locale={locale}>{children}</LocaleProvider>
+    </>
+  )
+}
diff --git a/src/app/login/page.jsx b/src/app/[locale]/login/page.jsx
similarity index 100%
rename from src/app/login/page.jsx
rename to src/app/[locale]/login/page.jsx
diff --git a/src/app/management/plan/page.jsx b/src/app/[locale]/management/plan/page.jsx
similarity index 100%
rename from src/app/management/plan/page.jsx
rename to src/app/[locale]/management/plan/page.jsx
diff --git a/src/app/management/stuff/page.jsx b/src/app/[locale]/management/stuff/page.jsx
similarity index 100%
rename from src/app/management/stuff/page.jsx
rename to src/app/[locale]/management/stuff/page.jsx
diff --git a/src/app/master/company/page.jsx b/src/app/[locale]/master/company/page.jsx
similarity index 100%
rename from src/app/master/company/page.jsx
rename to src/app/[locale]/master/company/page.jsx
diff --git a/src/app/master/price/page.jsx b/src/app/[locale]/master/price/page.jsx
similarity index 100%
rename from src/app/master/price/page.jsx
rename to src/app/[locale]/master/price/page.jsx
diff --git a/src/app/[locale]/not-found.jsx b/src/app/[locale]/not-found.jsx
new file mode 100644
index 00000000..8127943b
--- /dev/null
+++ b/src/app/[locale]/not-found.jsx
@@ -0,0 +1,25 @@
+'use client'
+
+import Link from 'next/link'
+
+export default function NotFound() {
+  return (
+    <section className="bg-white dark:bg-gray-900">
+      <div className="py-8 px-4 mx-auto max-w-screen-xl lg:py-16 lg:px-6">
+        <div className="mx-auto max-w-screen-sm text-center">
+          <h1 className="mb-4 text-7xl tracking-tight font-extrabold lg:text-9xl text-primary-600 dark:text-primary-500">404</h1>
+          <p className="mb-4 text-3xl tracking-tight font-bold text-gray-900 md:text-4xl dark:text-white">Something's missing.</p>
+          <p className="mb-4 text-lg font-light text-gray-500 dark:text-gray-400">
+            Sorry, we can't find that page. You'll find lots to explore on the home page.{' '}
+          </p>
+          <Link
+            href="/"
+            className="inline-flex text-white bg-primary-600 hover:bg-primary-800 focus:ring-4 focus:outline-none focus:ring-primary-300 font-medium rounded-lg text-sm px-5 py-2.5 text-center dark:focus:ring-primary-900 my-4"
+          >
+            Back to Homepage
+          </Link>
+        </div>
+      </div>
+    </section>
+  )
+}
diff --git a/src/app/[locale]/page.js b/src/app/[locale]/page.js
new file mode 100644
index 00000000..ab223428
--- /dev/null
+++ b/src/app/[locale]/page.js
@@ -0,0 +1,19 @@
+import MainPage from '@/components/Main'
+import { getCurrentLocale } from '@/locales/server'
+
+export default function page() {
+  const currentLocale = getCurrentLocale()
+
+  const mainPageProps = {
+    currentLocale,
+  }
+
+  return (
+    <>
+      <div className="m-4">
+        <h3>Main</h3>
+        <MainPage {...mainPageProps} />
+      </div>
+    </>
+  )
+}
diff --git a/src/app/roof/page.jsx b/src/app/[locale]/roof/page.jsx
similarity index 100%
rename from src/app/roof/page.jsx
rename to src/app/[locale]/roof/page.jsx
diff --git a/src/app/roof2/page.jsx b/src/app/[locale]/roof2/page.jsx
similarity index 100%
rename from src/app/roof2/page.jsx
rename to src/app/[locale]/roof2/page.jsx
diff --git a/src/components/Headers.jsx b/src/components/Headers.jsx
index 12d36144..a5503b8c 100644
--- a/src/components/Headers.jsx
+++ b/src/components/Headers.jsx
@@ -2,7 +2,7 @@ import Link from 'next/link'
 
 export default function Headers() {
   return (
-    <div className="w-full absolute z-10">
+    <div className="w-full">
       <nav className="container relative flex flex-wrap items-center justify-between mx-auto p-8">
         <Link href="/" className="font-bold text-3xl">
           Home
diff --git a/src/components/Main.jsx b/src/components/Main.jsx
index bcacb091..cd2b954b 100644
--- a/src/components/Main.jsx
+++ b/src/components/Main.jsx
@@ -1,5 +1,27 @@
-import Hero from './Hero'
+'use client'
 
-export default function Main() {
-  return <Hero title="Q.CAST III - Prototype" />
+import { useChangeLocale, useI18n } from '@/locales/client'
+import { Button, Chip } from '@nextui-org/react'
+
+export default function MainPage(props) {
+  const { currentLocale } = props
+  const t = useI18n()
+  const changeLocale = useChangeLocale()
+
+  const handleChangeLocale = () => {
+    currentLocale === 'ja' ? changeLocale('ko') : changeLocale('ja')
+  }
+
+  console.log('MainPage', currentLocale)
+
+  return (
+    <>
+      <h3>{t('locale', { locale: <Chip color="primary">{currentLocale}</Chip> })}</h3>
+      <div>{t('hello')}</div>
+      <div>{t('welcome', { name: '효준' })}</div>
+      <div>
+        <Button onClick={handleChangeLocale}>Change Locale</Button>
+      </div>
+    </>
+  )
 }
diff --git a/src/locales/client.js b/src/locales/client.js
new file mode 100644
index 00000000..c4679862
--- /dev/null
+++ b/src/locales/client.js
@@ -0,0 +1,18 @@
+'use client'
+
+import { createI18nClient } from 'next-international/client'
+
+export const { useI18n, useScopedI18n, I18nProviderClient, useChangeLocale, defineLocale, useCurrentLocale } = createI18nClient(
+  {
+    ko: () => import('./ko'),
+    ja: () => import('./ja'),
+  },
+  {
+    // Uncomment to set base path
+    // basePath: '/base',
+    // Uncomment to use custom segment name
+    // segmentName: 'locale',
+    // Uncomment to set fallback locale
+    // fallbackLocale: en,
+  },
+)
diff --git a/src/locales/ja.js b/src/locales/ja.js
new file mode 100644
index 00000000..2b7df6bd
--- /dev/null
+++ b/src/locales/ja.js
@@ -0,0 +1,7 @@
+console.log('Loaded JA')
+
+export default {
+  hello: 'こんにちは',
+  welcome: 'こんにちは {name}!',
+  locale: '現在のロケールは {locale} です。',
+}
diff --git a/src/locales/ko.js b/src/locales/ko.js
new file mode 100644
index 00000000..40e17ba2
--- /dev/null
+++ b/src/locales/ko.js
@@ -0,0 +1,7 @@
+console.log('Loaded KO')
+
+export default {
+  hello: '안녕',
+  welcome: '안녕 {name}!',
+  locale: '현재 로케일은 {locale}입니다.',
+}
diff --git a/src/locales/server.js b/src/locales/server.js
new file mode 100644
index 00000000..7bfe43f0
--- /dev/null
+++ b/src/locales/server.js
@@ -0,0 +1,14 @@
+import { createI18nServer } from 'next-international/server'
+
+export const { getI18n, getScopedI18n, getCurrentLocale, getStaticParams } = createI18nServer(
+  {
+    ko: () => import('./ko'),
+    ja: () => import('./ja'),
+  },
+  {
+    // Uncomment to use custom segment name
+    // segmentName: 'locale',
+    // Uncomment to set fallback locale
+    // fallbackLocale: en,
+  },
+)
diff --git a/src/middleware.js b/src/middleware.js
index d0329940..f93c0506 100644
--- a/src/middleware.js
+++ b/src/middleware.js
@@ -1,12 +1,27 @@
-import { NextRequest, NextResponse } from 'next/server'
+import { createI18nMiddleware } from 'next-international/middleware'
+
+const I18nMiddleware = createI18nMiddleware({
+  locales: ['ko', 'ja'],
+  defaultLocale: 'ko',
+})
 
 export function middleware(request) {
-  const requestHeaders = new Headers(request.headers)
-  requestHeaders.set('x-pathname', request.nextUrl.pathname)
-
-  return NextResponse.next({
-    request: {
-      headers: requestHeaders,
-    },
-  })
+  return I18nMiddleware(request)
 }
+
+export const config = {
+  matcher: ['/((?!api|static|.*\\..*|_next|favicon.ico|robots.txt).*)'],
+}
+
+// import { NextRequest, NextResponse } from 'next/server'
+
+// export function middleware(request) {
+//   const requestHeaders = new Headers(request.headers)
+//   requestHeaders.set('x-pathname', request.nextUrl.pathname)
+
+//   return NextResponse.next({
+//     request: {
+//       headers: requestHeaders,
+//     },
+//   })
+// }
diff --git a/yarn.lock b/yarn.lock
index e77fea4b..f0291bd0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2314,7 +2314,7 @@ chownr@^2.0.0:
   resolved "https://registry.yarnpkg.com/chownr/-/chownr-2.0.0.tgz#15bfbe53d2eab4cf70f18a8cd68ebe5b3cb1dece"
   integrity sha512-bIomtDF5KGpdogkLd9VspvFzk9KfpyyGlS8YFVZl7TGPBHL5snIOnxeshwVgPteQ9b4Eydl+pVbIyE1DcvCWgQ==
 
-client-only@0.0.1:
+client-only@0.0.1, client-only@^0.0.1:
   version "0.0.1"
   resolved "https://registry.npmjs.org/client-only/-/client-only-0.0.1.tgz"
   integrity sha512-IV3Ou0jSMzZrd3pZ48nLkT9DA7Ag1pnPzaiQhpW7c3RbcqqzvzzVu+L8gfqMp/8IM2MQtSiqaCxrrcfu8I8rMA==
@@ -2773,6 +2773,11 @@ inherits@2, inherits@^2.0.3:
   resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.4.tgz#0fa2c64f932917c3433a0ded55363aae37416b7c"
   integrity sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==
 
+international-types@^0.8.1:
+  version "0.8.1"
+  resolved "https://registry.yarnpkg.com/international-types/-/international-types-0.8.1.tgz#c0e593d9911c1a23f64bbd6eb1abb2941fe2353f"
+  integrity sha512-tajBCAHo4I0LIFlmQ9ZWfjMWVyRffzuvfbXCd6ssFt5u1Zw15DN0UBpVTItXdNa1ls+cpQt3Yw8+TxsfGF8JcA==
+
 intl-messageformat@^10.1.0:
   version "10.5.14"
   resolved "https://registry.yarnpkg.com/intl-messageformat/-/intl-messageformat-10.5.14.tgz#e5bb373f8a37b88fbe647d7b941f3ab2a37ed00a"
@@ -3097,6 +3102,15 @@ nanoid@^3.3.6, nanoid@^3.3.7:
   resolved "https://registry.npmjs.org/nanoid/-/nanoid-3.3.7.tgz"
   integrity sha512-eSRppjcPIatRIMC1U6UngP8XFcz8MQWGQdt1MTBQ7NaAmvXDfvNxbvWV3x2y6CdEUciCSsDHDQZbhYaB8QEo2g==
 
+next-international@^1.2.4:
+  version "1.2.4"
+  resolved "https://registry.yarnpkg.com/next-international/-/next-international-1.2.4.tgz#abe50b2aa3ba7ecf92d41f87537796a4b2dd0ba3"
+  integrity sha512-JQvp+h2iSgA/t8hu5S/Lwow1ZErJutQRdpnplxjv4VTlCiND8T95fYih8BjkHcVhQbtM+Wu9Mb1CM32wD9hlWQ==
+  dependencies:
+    client-only "^0.0.1"
+    international-types "^0.8.1"
+    server-only "^0.0.1"
+
 next@14.2.3:
   version "14.2.3"
   resolved "https://registry.npmjs.org/next/-/next-14.2.3.tgz"
@@ -3523,6 +3537,11 @@ semver@^7.3.5:
   resolved "https://registry.yarnpkg.com/semver/-/semver-7.6.2.tgz#1e3b34759f896e8f14d6134732ce798aeb0c6e13"
   integrity sha512-FNAIBWCx9qcRhoHcgcJ0gvU7SN1lYU2ZXuSfl04bSC5OpvDHFyJCjdNHomPXxjQlCBU67YW64PzY7/VIEH7F2w==
 
+server-only@^0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/server-only/-/server-only-0.0.1.tgz#0f366bb6afb618c37c9255a314535dc412cd1c9e"
+  integrity sha512-qepMx2JxAa5jjfzxG79yPPq+8BuFToHd1hm7kI+Z4zAq1ftQiP7HcxMhDDItrbtwVeLg/cY2JnKnrcFkmiswNA==
+
 set-blocking@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/set-blocking/-/set-blocking-2.0.0.tgz#045f9782d011ae9a6803ddd382b24392b3d890f7"