diff --git a/README.md b/README.md
index 0e7eb4e..ac5bf88 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@
 - [ ] 本地缓存
 - [ ] 彩色方块
 - [x] 游戏音效
-- [ ] i18n
+- [x] i18n
 - [ ] 积分商店，积分收集、兑换
 - [ ] 道具系统
 
diff --git a/src/App.vue b/src/App.vue
index 6b2355b..581b348 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -1,7 +1,9 @@
 <script lang="ts" setup>
+import { useI18N } from './composables/use-i18n'
 import { provideGameSounds } from '@/composables/use-game-sounds'
 
 provideGameSounds()
+useI18N()
 </script>
 
 <template>
diff --git a/src/components/NavHeader.vue b/src/components/NavHeader.vue
index cc5ca59..c8c1169 100644
--- a/src/components/NavHeader.vue
+++ b/src/components/NavHeader.vue
@@ -1,21 +1,40 @@
 <script lang="ts" setup>
 import { gameSoundsInjectionKey } from '@/composables/use-game-sounds'
+import { i18NInjectionKey } from '@/composables/use-i18n'
+import type { Language } from '@/composables/use-local-cache'
+import { languages } from '@/config/game'
 
 const {
   enableSounds,
   toggleSounds,
 } = inject(gameSoundsInjectionKey)!
+
+const { lang, setLanguage, $t } = inject(i18NInjectionKey)!
 </script>
 
 <template>
   <header class="mb-4 px-4 sm:px-6 border-b dark:border-gray-700 flex items-center justify-between">
     <h1 class="text-lg font-medium">
-      <RouterLink to="/" class="sm:after:content-[attr(data-text)]" data-text="（记忆方块）">
-        Memory Block
+      <RouterLink to="/">
+        {{ $t('memory-block', 'Memory Block') }}
       </RouterLink>
     </h1>
 
     <div class="pt-2 flex items-center gap-2">
+      <select
+        class="inline-block h-8 mb-2 px-3 select-none rounded-lg text-sm border-[rgba(0,0,0,.2)] border-x-[1.5px] border-t-[1.5px] border-b-4"
+        :value="lang"
+        @change="e => setLanguage((e.target as HTMLSelectElement).value as Language)"
+      >
+        <option
+          v-for="option of languages"
+          :key="option.value"
+          :value="option.value"
+        >
+          {{ option.label }}
+        </option>
+      </select>
+
       <Button @click="toggleSounds()">
         <i class="block" :class="enableSounds ? 'i-solar-volume-loud-broken' : 'i-solar-volume-cross-broken text-red-500'" />
       </Button>
diff --git a/src/composables/use-i18n.ts b/src/composables/use-i18n.ts
new file mode 100644
index 0000000..99ff72f
--- /dev/null
+++ b/src/composables/use-i18n.ts
@@ -0,0 +1,60 @@
+import type { ShallowRef } from 'vue'
+import { type Language, getLanguage, setLanguage } from './use-local-cache'
+import zhCN from '@/locale/zh-CN.json'
+
+interface I18N {
+  lang: ShallowRef<Language>
+  setLanguage: (language: Language) => void
+  $t: (key: string, fallback?: string) => string
+}
+
+export const i18NInjectionKey = Symbol('i18n') as InjectionKey<I18N>
+
+function loadLanguage(lang: Language) {
+  return import.meta.glob(`@/locale/*.json`)[`/src/locale/${lang}.json`]()
+}
+
+export function useI18N() {
+  const lang = shallowRef<Language>('zh-CN')
+
+  const messages = ref<Record<Language, null | Record<string, string>>>({
+    'zh-CN': zhCN,
+    'en-US': null,
+    'ja-JP': null,
+  })
+
+  const msg = computed(() => messages.value[lang.value] ?? messages.value['zh-CN'])
+
+  const _setLang = (language: Language) => {
+    lang.value = language
+    setLanguage(language)
+
+    if (!messages.value[language]) {
+      loadLanguage(language).then((res: any) => {
+        messages.value[language] = res.default as Record<string, string>
+      })
+    }
+  }
+
+  getLanguage().then((val) => {
+    if (val) {
+      _setLang(val)
+    }
+  })
+
+  const $t = (key: string, fallback: string = ''): string => {
+    return msg.value?.[key] ?? fallback
+  }
+
+  provide(i18NInjectionKey, {
+    lang,
+    setLanguage: _setLang,
+    $t,
+  })
+
+  return {
+    lang,
+    setLanguage: _setLang,
+    $t,
+  }
+}
diff --git a/src/composables/use-local-cache.ts b/src/composables/use-local-cache.ts
index fecfa9c..2c57d15 100644
--- a/src/composables/use-local-cache.ts
+++ b/src/composables/use-local-cache.ts
@@ -15,10 +15,14 @@ export interface RecordItem {
   endTime: string
 }
 
+export type Language = 'zh-CN' | 'en-US' | 'ja-JP'
+
 export const RECORD_KEY = 'record'
 
 const HIGHEST_SCORE_KEY = 'highestScore.'
 
+const LANGUAGE_KEY = 'memoryBlockLanguage'
+
 // 获取最高分
 export function getHighestScoreInHistory(level: GameLevel) {
   return localforage.getItem<number>(HIGHEST_SCORE_KEY + level, v => v ?? 0)
@@ -46,3 +50,11 @@ export async function getAllRecordsFromStore() {
 
   return _records
 }
+
+// 获取语言
+export const getLanguage = () => localforage.getItem<Language>(LANGUAGE_KEY, v => v ?? 'zh-CN')
+
+// 设置语言
+export function setLanguage(lang: Language = 'zh-CN') {
+  localforage.setItem(LANGUAGE_KEY, lang)
+}
diff --git a/src/config/game.ts b/src/config/game.ts
index 436a279..b5656b9 100644
--- a/src/config/game.ts
+++ b/src/config/game.ts
@@ -1,9 +1,9 @@
 export const GAME_LEVELS = {
-  easy: { code: 'easy', type: 'default', en: 'Easy Level', zh: '简单难度', path: '/game/easy' },
-  normal: { code: 'normal', type: 'primary', en: 'Normal Level', zh: '中等难度', path: '/game/normal' },
-  master: { code: 'master', type: 'warning', en: 'Master Level', zh: '困难难度', path: '/game/master' },
-  expert: { code: 'expert', type: 'danger', en: 'Expert Level', zh: '专家难度', path: '/game/expert' },
-  custom: { code: 'custom', type: 'custom', en: 'Practice Mode', zh: '练习模式', path: '/settings/custom' },
+  easy: { code: 'easy', type: 'default', en: 'Easy Level', zh: '简单难度', ja: '簡単なレベル', path: '/game/easy' },
+  normal: { code: 'normal', type: 'primary', en: 'Normal Level', zh: '中等难度', ja: '中レベル', path: '/game/normal' },
+  master: { code: 'master', type: 'warning', en: 'Master Level', zh: '困难难度', ja: 'マスターレベル', path: '/game/master' },
+  expert: { code: 'expert', type: 'danger', en: 'Expert Level', zh: '专家难度', ja: 'エキスパートレベル', path: '/game/expert' },
+  custom: { code: 'custom', type: 'custom', en: 'Practice Mode', zh: '练习模式', ja: '練習モード', path: '/settings/custom' },
 } as const
 
 export const LEVEL_GRIDS = {
@@ -61,3 +61,9 @@ export const LEVEL_GRIDS = {
 export type GameLevel = {
   [K in keyof typeof GAME_LEVELS]: typeof GAME_LEVELS[K]['code'];
 }[keyof typeof GAME_LEVELS]
+
+export const languages = [
+  { label: '中文', value: 'zh-CN' },
+  { label: 'English', value: 'en-US' },
+  { label: '日本語', value: 'ja-JP' },
+]
diff --git a/src/locale/en-US.json b/src/locale/en-US.json
new file mode 100644
index 0000000..223bd5f
--- /dev/null
+++ b/src/locale/en-US.json
@@ -0,0 +1,28 @@
+
+{
+  "memory-block": "Memory block",
+  "custom-levels": "Custom levels",
+  "number-of-grids": "Number of grids",
+  "minimum-blocks": "Minimum number of generated blocks",
+  "maximum-blocks": "Maximum number of generated blocks",
+  "hp": "HP",
+  "second": "second",
+  "setup-completed": "Setup completed, start the game",
+
+  "score": "Score",
+  "start-time": "Start time",
+  "end-time": "Ends time",
+  "using-time": "Using time",
+
+  "game-over": "Game over",
+  "start": "Start",
+  "again": "Again",
+  "clear": "Clear",
+  "selected": "Selected",
+  "continue": "Continue",
+
+  "memory-time": "Memory time before the start of each round",
+  "configuration-integer-gt": "Configuration can only be an integer greater than 1",
+  "select-one-first": "Please select at least one block first",
+  "remember-block-locations": "Please remember the following block locations"
+}
diff --git a/src/locale/ja-JP.json b/src/locale/ja-JP.json
new file mode 100644
index 0000000..a838942
--- /dev/null
+++ b/src/locale/ja-JP.json
@@ -0,0 +1,27 @@
+{
+  "memory-block": "メモリ ブロック",
+  "custom-levels": "カスタム レベル",
+  "number-of-grids": "グリッドの数",
+  "minimum-blocks": "生成されるブロックの最小数",
+  "maximum-blocks": "生成されるブロックの最大数",
+  "hp": "HP",
+  "second": "秒",
+  "setup-completed": "セットアップが完了しました。ゲームを開始します",
+
+  "score": "スコア",
+  "start-time": "開始時刻",
+  "end-time": "終了時刻",
+  "using-time": "使用時間",
+
+  "game-over": "ゲームオーバー",
+  "start": "ゲーム開始",
+  "again": "また",
+  "clear": "選択をクリアします",
+  "selected": "選択済み",
+  "continue": "継続",
+
+  "memory-time": "各ラウンド開始前の記憶時間",
+  "configuration-integer-gt": "構成には 1 より大きい整数のみを指定できます",
+  "select-one-first": "最初に少なくとも 1 つのブロックを選択してください",
+  "remember-block-locations": "次のブロックの場所を覚えておいてください"
+}
diff --git a/src/locale/zh-CN.json b/src/locale/zh-CN.json
new file mode 100644
index 0000000..d33b205
--- /dev/null
+++ b/src/locale/zh-CN.json
@@ -0,0 +1,27 @@
+{
+  "memory-block": "记忆方块",
+  "custom-levels": "自定义关卡",
+  "number-of-grids": "网格数量",
+  "minimum-blocks": "最小生成方块数",
+  "maximum-blocks": "最大生成方块数",
+  "hp": "生命值",
+  "second": "秒",
+  "setup-completed": "设置完成，开始游戏",
+  
+  "score": "得分",
+  "start-time": "开始于",
+  "end-time": "结束于",
+  "using-time": "用时",
+  
+  "game-over": "游戏结束",
+  "start": "游戏开始",
+  "again": "再来一次",
+  "clear": "清空选中",
+  "selected": "选好了",
+  "continue": "继续",
+  
+  "memory-time": "每回合开始前的记忆时间",
+  "configuration-integer-gt": "配置只能为大于 1 的整数",
+  "select-one-first": "请先选择至少一个方块",
+  "remember-block-locations": "请记住以下方块位置"
+}
diff --git a/src/views/game/[level].vue b/src/views/game/[level].vue
index 21040e3..7bebd16 100644
--- a/src/views/game/[level].vue
+++ b/src/views/game/[level].vue
@@ -5,9 +5,12 @@ import { useGameStatus } from '@/composables/use-game-status'
 import { useGameScore } from '@/composables/use-game-score'
 import { useCheckedBlocks } from '@/composables/use-checked-blocks'
 import { setHighestScoreInHistory } from '@/composables/use-local-cache'
+import { i18NInjectionKey } from '@/composables/use-i18n'
 
 type GameStatus = 'over' | 'pause' | 'playing' | 'previewing'
 
+const { $t } = inject(i18NInjectionKey)!
+
 const _gameState = shallowRef<GameStatus>('previewing')
 
 const gameStatus = computed(() => ({
@@ -106,7 +109,7 @@ function onCheckResult() {
   const { matched, blocks } = getAllCheckedResult()
 
   if (!matched && !blocks.length) {
-    useToast('请先选择至少一个方块')
+    useToast($t('select-one-first', '请先选择至少一个方块'))
     return
   }
 
@@ -153,7 +156,7 @@ function gameOver() {
   markAllWrongBlocks()
   setGameStatus('over')
 
-  useToastError('游戏结束')
+  useToastError($t('game-over', '游戏结束'))
 
   // 如果分数比历史最高分高, 更新历史最高分, 并播放纸屑
   if (gameScore.value > highestScore.value) {
@@ -218,7 +221,7 @@ onBeforeUnmount(() => {
   <main class="h-full flex items-center justify-center">
     <div>
       <h2 class="w-full flex items-center justify-center text-xl font-mono">
-        {{ gameStatus.previewing ? '请记住以下方块位置' : gameStatus.over ? '游戏结束' : '游戏开始' }}<template v-if="countdown">
+        {{ gameStatus.previewing ? $t('remember-block-locations', '请记住以下方块位置') : gameStatus.over ? $t('game-over', '游戏结束') : $t('start', '游戏开始') }}<template v-if="countdown">
           ({{ countdown }})
         </template>
       </h2>
@@ -286,17 +289,16 @@ onBeforeUnmount(() => {
           :disabled="gameStatus.previewing || gameStatus.pause"
           @click="onResetBlocks"
         >
-          {{ gameStatus.over ? '再来一次' : '清空选中' }}
+          {{ gameStatus.over ? $t('again', '再来一次') : $t('clear', '清空选中') }}
         </Button>
 
         <Button
           v-show="!gameStatus.over"
           :disabled="gameStatus.previewing"
           :type="gameStatus.pause ? 'warning' : 'primary'"
-          class="w-[72px]"
           @click="onCheckResult"
         >
-          {{ gameStatus.pause ? '继续' : '选好了' }}
+          {{ gameStatus.pause ? $t('continue', '继续') : $t('selected', '选好了') }}
         </Button>
       </div>
     </div>
diff --git a/src/views/index.vue b/src/views/index.vue
index b61e14e..caf6542 100644
--- a/src/views/index.vue
+++ b/src/views/index.vue
@@ -1,18 +1,21 @@
 <script setup lang="ts">
 import { GAME_LEVELS } from '@/config/game'
+import { i18NInjectionKey } from '@/composables/use-i18n'
+
+const { lang, $t } = inject(i18NInjectionKey)!
+
+const key = computed(() => lang.value.split('-')[0])
 </script>
 
 <template>
   <div className="h-full flex flex-col items-center justify-center">
     <h2 className="-mt-32 text-center text-3xl text-medium font-mono">
-      Memory Block
-      <br>
-      记忆方块
+      {{ $t('memory-block', '记忆方块') }}
     </h2>
 
     <div className="mt-20 flex items-center flex-col gap-2">
       <Button v-for="btn of GAME_LEVELS" :key="btn.path" :to="btn.path" :type="btn.type" as="RouterLink">
-        {{ btn.zh }}
+        {{ (btn as any)[key] }}
       </Button>
     </div>
   </div>
diff --git a/src/views/record/[date].vue b/src/views/record/[date].vue
index b3da753..7a774c7 100644
--- a/src/views/record/[date].vue
+++ b/src/views/record/[date].vue
@@ -1,6 +1,9 @@
 <script lang="ts" setup>
 import type { RecordItem } from '@/composables/use-local-cache'
 import { getTargetDateRecords } from '@/composables/use-local-cache'
+import { i18NInjectionKey } from '@/composables/use-i18n'
+
+const { $t } = inject(i18NInjectionKey)!
 
 const route = useRoute()
 
@@ -16,10 +19,10 @@ onMounted(async () => {
     <ul class="max-w-[500px] mx-auto flex flex-col-reverse">
       <li v-for="record of records" :key="record.startTime" class="mb-2 py-2">
         <LevelTag :level="record.level" class="mr-2" />
-        <span>得分: {{ record.score }}</span>
-        <span>开始于: {{ record.startTime }}</span>
-        <span>结束于: {{ record.endTime }}</span>
-        <span>用时: {{ record.durations }}</span>
+        <span>{{ $t('score', '得分') }}: {{ record.score }}</span>
+        <span>{{ $t('start-time', '开始于') }}: {{ record.startTime }}</span>
+        <span>{{ $t('end-time', '结束于') }}: {{ record.endTime }}</span>
+        <span>{{ $t('using-time', '用时') }}: {{ record.durations }}</span>
       </li>
     </ul>
   </div>
diff --git a/src/views/settings/custom.vue b/src/views/settings/custom.vue
index 0aaa69c..856c20c 100644
--- a/src/views/settings/custom.vue
+++ b/src/views/settings/custom.vue
@@ -1,5 +1,8 @@
 <script lang="ts" setup>
 import { LEVEL_GRIDS } from '@/config/game'
+import { i18NInjectionKey } from '@/composables/use-i18n'
+
+const { $t } = inject(i18NInjectionKey)!
 
 const router = useRouter()
 
@@ -16,7 +19,7 @@ function saveCustomLevelConfig() {
   const illegalValue = Object.values(customLevelConfig.value).find(v => typeof v !== 'number' || v <= 0 || !Number.isInteger(v))
 
   if (illegalValue) {
-    useToastError('配置只能为大于 1 的整数')
+    useToastError($t('configuration-integer-gt', '配置只能为大于 1 的整数'))
 
     return
   }
@@ -57,21 +60,21 @@ function saveCustomLevelConfig() {
   <div class="flex h-full py-16 items-center justify-center overflow-auto">
     <form class="w-72" @submit.prevent="saveCustomLevelConfig">
       <h2 class="text-xl mb-2">
-        自定义关卡
+        {{ $t('custom-levels', '自定义关卡') }}
       </h2>
 
       <div class="mb-4">
-        <span class="text-sm">网格数量<i class="text-gray-500">（X * Y）</i></span>
+        <span class="text-sm">{{ $t('number-of-grids', '网格数量') }}<i class="text-gray-500">（X * Y）</i></span>
         <Input v-model.number="customLevelConfig.grid" maxlength="2" />
       </div>
 
       <div class="mb-4">
-        <span class="text-sm">最小生成方块数</span>
+        <span class="text-sm">{{ $t('minimum-blocks', '最小生成方块数') }}</span>
         <Input v-model.number="customLevelConfig.min" maxlength="2" />
       </div>
 
       <div class="mb-4">
-        <span class="text-sm">最大生成方块数</span>
+        <span class="text-sm">{{ $t('maximum-blocks', '最大生成方块数') }}</span>
         <Input v-model.number="customLevelConfig.max" maxlength="2" />
       </div>
 
@@ -81,17 +84,17 @@ function saveCustomLevelConfig() {
       </div> -->
 
       <div class="mb-4">
-        <span class="text-sm">生命值</span>
+        <span class="text-sm">{{ $t('hp', '生命值') }}</span>
         <Input v-model.number="customLevelConfig.health" maxlength="15" />
       </div>
 
       <div class="mb-8">
-        <span class="text-sm">每回合开始前的记忆时间<i class="text-gray-500">（秒）</i></span>
+        <span class="text-sm">{{ $t('memory-time', '每回合开始前的记忆时间') }}<i class="text-gray-500">（{{ $t('second', '秒') }}）</i></span>
         <Input v-model.number="customLevelConfig.internal" maxlength="2" />
       </div>
 
       <Button type="primary">
-        设置完成，开始游戏
+        {{ $t('setup-completed', '设置完成，开始游戏') }}
       </Button>
     </form>
   </div>