diff --git a/auto-imports.d.ts b/auto-imports.d.ts
index 530d8f8..ad9616b 100644
--- a/auto-imports.d.ts
+++ b/auto-imports.d.ts
@@ -213,6 +213,7 @@ declare global {
   const useInterval: typeof import('@vueuse/core').useInterval
   const useIntervalFn: typeof import('@vueuse/core').useIntervalFn
   const useKeyModifier: typeof import('@vueuse/core').useKeyModifier
+  const useLanguage: typeof import('./src/composables/useLanguage').useLanguage
   const useLastChanged: typeof import('@vueuse/core').useLastChanged
   const useLink: typeof import('vue-router').useLink
   const useLocalStorage: typeof import('@vueuse/core').useLocalStorage
@@ -333,6 +334,9 @@ declare global {
   export type { Component, Slot, Slots, ComponentPublicInstance, ComputedRef, DirectiveBinding, ExtractDefaultPropTypes, ExtractPropTypes, ExtractPublicPropTypes, InjectionKey, PropType, Ref, ShallowRef, MaybeRef, MaybeRefOrGetter, VNode, WritableComputedRef } from 'vue'
   import('vue')
   // @ts-ignore
+  export type { Language } from './src/composables/useLanguage'
+  import('./src/composables/useLanguage')
+  // @ts-ignore
   export type { QRScanResult } from './src/composables/useQRScanner'
   import('./src/composables/useQRScanner')
   // @ts-ignore
@@ -557,6 +561,7 @@ declare module 'vue' {
     readonly useInterval: UnwrapRef<typeof import('@vueuse/core')['useInterval']>
     readonly useIntervalFn: UnwrapRef<typeof import('@vueuse/core')['useIntervalFn']>
     readonly useKeyModifier: UnwrapRef<typeof import('@vueuse/core')['useKeyModifier']>
+    readonly useLanguage: UnwrapRef<typeof import('./src/composables/useLanguage')['useLanguage']>
     readonly useLastChanged: UnwrapRef<typeof import('@vueuse/core')['useLastChanged']>
     readonly useLink: UnwrapRef<typeof import('vue-router')['useLink']>
     readonly useLocalStorage: UnwrapRef<typeof import('@vueuse/core')['useLocalStorage']>
diff --git a/src/App.vue b/src/App.vue
index fd0ffa2..5253a68 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -1,10 +1,15 @@
 <script setup lang="ts">
 const { initializeWallet } = useWalletStore();
+const { locale } = useLanguage();
 
 onMounted(() => {
   initializeWallet();
   console.log("App mounted successfully");
 });
+
+watch(locale, (newLocale) => {
+  document.querySelector("html")?.setAttribute("lang", newLocale);
+}, { immediate: true });
 </script>
 
 <template>
diff --git a/src/composables/useLanguage.ts b/src/composables/useLanguage.ts
new file mode 100644
index 0000000..b4fbbb1
--- /dev/null
+++ b/src/composables/useLanguage.ts
@@ -0,0 +1,60 @@
+import type { Locale } from "vue-i18n";
+
+export interface Language {
+  code: Locale;
+  name: string;
+  nativeName: string;
+}
+
+/**
+ * 语言管理组合式函数
+ */
+export function useLanguage() {
+  const { locale, availableLocales } = useI18n();
+
+  // 可用的语言列表
+  const languages: Language[] = [
+    {
+      code: "zh-CN",
+      name: "Chinese (Simplified)",
+      nativeName: "简体中文",
+    },
+    {
+      code: "en-US",
+      name: "English (US)",
+      nativeName: "English",
+    },
+  ];
+
+  // 当前语言
+  const currentLanguage = computed(() => {
+    return languages.find(lang => lang.code === locale.value) || languages[0];
+  });
+
+  /**
+   * 切换语言
+   */
+  function setLanguage(langCode: Locale) {
+    locale.value = langCode;
+    // 持久化到 localStorage
+    localStorage.setItem("app-language", langCode);
+  }
+
+  /**
+   * 从 localStorage 加载保存的语言
+   */
+  function loadSavedLanguage() {
+    const saved = localStorage.getItem("app-language") as Locale;
+    if (saved && availableLocales.includes(saved)) {
+      locale.value = saved;
+    }
+  }
+
+  return {
+    languages,
+    currentLanguage,
+    locale,
+    setLanguage,
+    loadSavedLanguage,
+  };
+}
diff --git a/src/locales/en-US.json b/src/locales/en-US.json
index d3f29df..8ef02d3 100644
--- a/src/locales/en-US.json
+++ b/src/locales/en-US.json
@@ -299,5 +299,22 @@
       "title": "Verify your email",
       "description": "We have sent a verification code to {email}. Please enter the code below to verify your email address."
     }
+  },
+  "settings": {
+    "title": "Settings",
+    "language": "Language",
+    "aboutUs": "About Us",
+    "clearCache": "Clear Cache",
+    "checkUpdate": "Check for Updates",
+    "cacheCleared": "Cache cleared",
+    "updateAvailable": "New version available",
+    "currentVersion": "Current version",
+    "latestVersion": "Latest version",
+    "newVersion": "New version",
+    "cancel": "Cancel",
+    "updateNow": "Update Now",
+    "alreadyLatest": "Already up to date",
+    "checkUpdateFailed": "Failed to check for updates",
+    "languageTitle": "Language / 语言"
   }
 }
diff --git a/src/locales/zh-CN.json b/src/locales/zh-CN.json
index b1f394c..284dbf6 100644
--- a/src/locales/zh-CN.json
+++ b/src/locales/zh-CN.json
@@ -299,5 +299,22 @@
       "title": "验证您的邮箱",
       "description": "我们已向 {email} 发送了一个验证码。请在下方输入代码以验证您的邮箱地址。"
     }
+  },
+  "settings": {
+    "title": "设置",
+    "language": "语言",
+    "aboutUs": "关于我们",
+    "clearCache": "清除缓存",
+    "checkUpdate": "检查更新",
+    "cacheCleared": "缓存已清除",
+    "updateAvailable": "发现新版本",
+    "currentVersion": "当前版本",
+    "latestVersion": "最新版本",
+    "newVersion": "新版本",
+    "cancel": "取消",
+    "updateNow": "立即更新",
+    "alreadyLatest": "已是最新版本",
+    "checkUpdateFailed": "检查更新失败",
+    "languageTitle": "语言 / Language"
   }
 }
diff --git a/src/main.ts b/src/main.ts
index bded661..48f1b0e 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,3 +1,5 @@
+import type { WritableComputedRef } from "vue";
+import type { Locale } from "vue-i18n";
 import { IonicVue } from "@ionic/vue";
 import { createPinia } from "pinia";
 import { createApp } from "vue";
diff --git a/src/router/index.ts b/src/router/index.ts
index 7e9e712..a65a08e 100644
--- a/src/router/index.ts
+++ b/src/router/index.ts
@@ -55,7 +55,17 @@ const routes: Array<RouteRecordRaw> = [
   },
   {
     path: "/system-settings",
-    component: () => import("@/views/system-settings/index.vue"),
+    component: () => import("@/views/system-settings/outlet.vue"),
+    children: [
+      {
+        path: "",
+        component: () => import("@/views/system-settings/index.vue"),
+      },
+      {
+        path: "language",
+        component: () => import("@/views/system-settings/language.vue"),
+      },
+    ],
   },
   {
     path: "/issue/issuing-apply",
diff --git a/src/views/system-settings/index.vue b/src/views/system-settings/index.vue
index 1801baf..38f5023 100644
--- a/src/views/system-settings/index.vue
+++ b/src/views/system-settings/index.vue
@@ -1,15 +1,18 @@
 <script lang="ts" setup>
-import { alertController, toastController } from "@ionic/vue";
+import { alertController, toastController, useIonRouter } from "@ionic/vue";
 import { checkbox, close, information, languageOutline, refresh } from "ionicons/icons";
 
+const { t } = useI18n();
+const router = useIonRouter();
 const { cacheSize, calculateCacheSize, clearCache } = useCacheSize();
 const { isChecking, checkForUpdate } = useAppUpdate();
+const { currentLanguage } = useLanguage();
 
 function handleClearCache() {
   clearCache();
   calculateCacheSize();
   toastController.create({
-    message: "缓存已清除",
+    message: t("settings.cacheCleared"),
     duration: 2000,
     icon: checkbox,
     position: "bottom",
@@ -23,15 +26,15 @@ async function handleCheckUpdate() {
 
     if (result.hasUpdate) {
       const alert = await alertController.create({
-        header: "发现新版本",
-        message: `当前版本: ${result.currentVersion}\n最新版本: ${result.latestVersion || "新版本"}`,
+        header: t("settings.updateAvailable"),
+        message: `${t("settings.currentVersion")}: ${result.currentVersion}\n${t("settings.latestVersion")}: ${result.latestVersion || t("settings.newVersion")}`,
         buttons: [
           {
-            text: "取消",
+            text: t("settings.cancel"),
             role: "cancel",
           },
           {
-            text: "立即更新",
+            text: t("settings.updateNow"),
             handler: () => {
               window.location.reload();
             },
@@ -42,7 +45,7 @@ async function handleCheckUpdate() {
     }
     else {
       const toast = await toastController.create({
-        message: "已是最新版本",
+        message: t("settings.alreadyLatest"),
         duration: 2000,
         icon: checkbox,
         position: "bottom",
@@ -53,7 +56,7 @@ async function handleCheckUpdate() {
   }
   catch (error) {
     const toast = await toastController.create({
-      message: "检查更新失败",
+      message: t("settings.checkUpdateFailed"),
       duration: 2000,
       position: "bottom",
       color: "danger",
@@ -78,20 +81,20 @@ onMounted(() => {
     <ion-content :fullscreen="true" class="ion-padding">
       <ion-list lines="full">
         <ion-list-header>
-          <ion-label>设置</ion-label>
+          <ion-label>{{ t("settings.title") }}</ion-label>
         </ion-list-header>
-        <ion-item button>
+        <ion-item button @click="router.push('/system-settings/language')">
           <div class="flex justify-between w-full items-center">
             <div class="flex-center space-x-2">
               <div class="icon">
                 <ion-icon :icon="languageOutline" class="text-lg" />
               </div>
               <div class="text-sm font-semibold">
-                语言
+                {{ t("settings.language") }}
               </div>
             </div>
             <div class="end">
-              简体中文
+              {{ currentLanguage.nativeName }}
             </div>
           </div>
         </ion-item>
@@ -102,7 +105,7 @@ onMounted(() => {
                 <ion-icon :icon="information" class="text-lg" />
               </div>
               <div class="text-sm font-semibold">
-                关于我们
+                {{ t("settings.aboutUs") }}
               </div>
             </div>
           </div>
@@ -114,7 +117,7 @@ onMounted(() => {
                 <ion-icon :icon="close" class="text-lg" />
               </div>
               <div class="text-sm font-semibold">
-                清除缓存
+                {{ t("settings.clearCache") }}
               </div>
             </div>
             <div class="end">
@@ -129,7 +132,7 @@ onMounted(() => {
                 <ion-icon :icon="refresh" class="text-lg" :class="{ 'animate-spin': isChecking }" />
               </div>
               <div class="text-sm font-semibold">
-                检查更新
+                {{ t("settings.checkUpdate") }}
               </div>
             </div>
           </div>
diff --git a/src/views/system-settings/language.vue b/src/views/system-settings/language.vue
new file mode 100644
index 0000000..74fdc58
--- /dev/null
+++ b/src/views/system-settings/language.vue
@@ -0,0 +1,58 @@
+<script lang="ts" setup>
+import { useIonRouter } from "@ionic/vue";
+
+const { t } = useI18n();
+const router = useIonRouter();
+const { languages, locale, setLanguage } = useLanguage();
+
+function handleLanguageChange(event: CustomEvent) {
+  const langCode = event.detail.value;
+  setLanguage(langCode);
+
+  // 返回上一页
+  setTimeout(() => {
+    router.back();
+  }, 300);
+}
+</script>
+
+<template>
+  <ion-page>
+    <ion-header>
+      <ion-toolbar class="ui-toolbar">
+        <ion-back-button slot="start" />
+        <ion-title>{{ t("settings.languageTitle") }}</ion-title>
+      </ion-toolbar>
+    </ion-header>
+    <ion-content :fullscreen="true" class="ion-padding">
+      <ion-list lines="full">
+        <ion-radio-group :value="locale" @ion-change="handleLanguageChange">
+          <ion-item v-for="lang in languages" :key="lang.code">
+            <ion-radio :value="lang.code">
+              <div class="language-item">
+                <div class="font-semibold">
+                  {{ lang.nativeName }}
+                </div>
+                <div class="text-xs text-gray-500">
+                  {{ lang.name }}
+                </div>
+              </div>
+            </ion-radio>
+          </ion-item>
+        </ion-radio-group>
+      </ion-list>
+    </ion-content>
+  </ion-page>
+</template>
+
+<style lang='css' scoped></style>
+"css" scoped>
+@reference "tailwindcss";
+
+.language-item {
+  @apply py-1;
+}
+
+ion-radio {
+  width: 100%;
+}
diff --git a/src/views/system-settings/outlet.vue b/src/views/system-settings/outlet.vue
new file mode 100644
index 0000000..3a601a5
--- /dev/null
+++ b/src/views/system-settings/outlet.vue
@@ -0,0 +1,17 @@
+<script lang="ts" setup></script>
+
+<template>
+  <ion-page>
+    <ion-header>
+      <ion-toolbar class="ui-toolbar">
+        <ion-back-button slot="start" />
+      </ion-toolbar>
+    </ion-header>
+
+    <ion-content :fullscreen="true" class="ion-padding">
+      <ion-router-outlet />
+    </ion-content>
+  </ion-page>
+</template>
+
+<style lang='css' scoped></style>