diff --git a/auto-imports.d.ts b/auto-imports.d.ts
index 9e7c7cc..530d8f8 100644
--- a/auto-imports.d.ts
+++ b/auto-imports.d.ts
@@ -134,6 +134,7 @@ declare global {
   const until: typeof import('@vueuse/core').until
   const useActiveElement: typeof import('@vueuse/core').useActiveElement
   const useAnimate: typeof import('@vueuse/core').useAnimate
+  const useAppUpdate: typeof import('./src/composables/useAppUpdate').useAppUpdate
   const useArrayDifference: typeof import('@vueuse/core').useArrayDifference
   const useArrayEvery: typeof import('@vueuse/core').useArrayEvery
   const useArrayFilter: typeof import('@vueuse/core').useArrayFilter
@@ -156,6 +157,7 @@ declare global {
   const useBreakpoints: typeof import('@vueuse/core').useBreakpoints
   const useBroadcastChannel: typeof import('@vueuse/core').useBroadcastChannel
   const useBrowserLocation: typeof import('@vueuse/core').useBrowserLocation
+  const useCacheSize: typeof import('./src/composables/useCacheSize').useCacheSize
   const useCached: typeof import('@vueuse/core').useCached
   const useClipboard: typeof import('@vueuse/core').useClipboard
   const useClipboardItems: typeof import('@vueuse/core').useClipboardItems
@@ -476,6 +478,7 @@ declare module 'vue' {
     readonly until: UnwrapRef<typeof import('@vueuse/core')['until']>
     readonly useActiveElement: UnwrapRef<typeof import('@vueuse/core')['useActiveElement']>
     readonly useAnimate: UnwrapRef<typeof import('@vueuse/core')['useAnimate']>
+    readonly useAppUpdate: UnwrapRef<typeof import('./src/composables/useAppUpdate')['useAppUpdate']>
     readonly useArrayDifference: UnwrapRef<typeof import('@vueuse/core')['useArrayDifference']>
     readonly useArrayEvery: UnwrapRef<typeof import('@vueuse/core')['useArrayEvery']>
     readonly useArrayFilter: UnwrapRef<typeof import('@vueuse/core')['useArrayFilter']>
@@ -498,6 +501,7 @@ declare module 'vue' {
     readonly useBreakpoints: UnwrapRef<typeof import('@vueuse/core')['useBreakpoints']>
     readonly useBroadcastChannel: UnwrapRef<typeof import('@vueuse/core')['useBroadcastChannel']>
     readonly useBrowserLocation: UnwrapRef<typeof import('@vueuse/core')['useBrowserLocation']>
+    readonly useCacheSize: UnwrapRef<typeof import('./src/composables/useCacheSize')['useCacheSize']>
     readonly useCached: UnwrapRef<typeof import('@vueuse/core')['useCached']>
     readonly useClipboard: UnwrapRef<typeof import('@vueuse/core')['useClipboard']>
     readonly useClipboardItems: UnwrapRef<typeof import('@vueuse/core')['useClipboardItems']>
diff --git a/components.d.ts b/components.d.ts
index da2196b..031172c 100644
--- a/components.d.ts
+++ b/components.d.ts
@@ -40,6 +40,7 @@ declare module 'vue' {
     IonItem: typeof import('@ionic/vue')['IonItem']
     IonLabel: typeof import('@ionic/vue')['IonLabel']
     IonList: typeof import('@ionic/vue')['IonList']
+    IonListHeader: typeof import('@ionic/vue')['IonListHeader']
     IonModal: typeof import('@ionic/vue')['IonModal']
     IonNote: typeof import('@ionic/vue')['IonNote']
     IonPage: typeof import('@ionic/vue')['IonPage']
@@ -106,6 +107,7 @@ declare global {
   const IonItem: typeof import('@ionic/vue')['IonItem']
   const IonLabel: typeof import('@ionic/vue')['IonLabel']
   const IonList: typeof import('@ionic/vue')['IonList']
+  const IonListHeader: typeof import('@ionic/vue')['IonListHeader']
   const IonModal: typeof import('@ionic/vue')['IonModal']
   const IonNote: typeof import('@ionic/vue')['IonNote']
   const IonPage: typeof import('@ionic/vue')['IonPage']
diff --git a/src/composables/useAppUpdate.ts b/src/composables/useAppUpdate.ts
new file mode 100644
index 0000000..40a092a
--- /dev/null
+++ b/src/composables/useAppUpdate.ts
@@ -0,0 +1,103 @@
+/**
+ * 应用更新检查组合式函数
+ */
+export function useAppUpdate() {
+  const isChecking = ref(false);
+  const hasUpdate = ref(false);
+  const latestVersion = ref("");
+  const currentVersion = ref("1.0.0"); // 从 package.json 或环境变量读取
+
+  /**
+   * 检查是否有新版本
+   */
+  async function checkForUpdate(): Promise<{
+    hasUpdate: boolean;
+    currentVersion: string;
+    latestVersion?: string;
+  }> {
+    isChecking.value = true;
+    try {
+      // 方案1: 从服务器检查版本（需要后端 API）
+      // const response = await fetch('/api/version');
+      // const { version } = await response.json();
+      // latestVersion.value = version;
+
+      // 方案2: 检查 Service Worker 更新（PWA 应用）
+      if ("serviceWorker" in navigator) {
+        const registration = await navigator.serviceWorker.getRegistration();
+        if (registration) {
+          await registration.update();
+          const hasNewWorker = registration.waiting !== null || registration.installing !== null;
+          hasUpdate.value = hasNewWorker;
+
+          if (hasNewWorker) {
+            return {
+              hasUpdate: true,
+              currentVersion: currentVersion.value,
+              latestVersion: "新版本可用",
+            };
+          }
+        }
+      }
+
+      // 模拟检查（实际应用中需要替换为真实的 API 调用）
+      await new Promise(resolve => setTimeout(resolve, 1000));
+
+      // 暂时返回无更新
+      return {
+        hasUpdate: false,
+        currentVersion: currentVersion.value,
+      };
+    }
+    catch (error) {
+      console.error("检查更新失败:", error);
+      throw error;
+    }
+    finally {
+      isChecking.value = false;
+    }
+  }
+
+  /**
+   * 应用更新（重新加载应用）
+   */
+  async function applyUpdate(): Promise<void> {
+    if ("serviceWorker" in navigator) {
+      const registration = await navigator.serviceWorker.getRegistration();
+      if (registration?.waiting) {
+        // 通知 Service Worker 跳过等待，立即激活
+        registration.waiting.postMessage({ type: "SKIP_WAITING" });
+
+        // 等待 Service Worker 激活后重新加载页面
+        navigator.serviceWorker.addEventListener("controllerchange", () => {
+          window.location.reload();
+        });
+        return;
+      }
+    }
+
+    // 如果没有 Service Worker，直接重新加载
+    window.location.reload();
+  }
+
+  /**
+   * 强制刷新应用（清除缓存后重新加载）
+   */
+  async function forceReload(): Promise<void> {
+    if ("caches" in window) {
+      const cacheNames = await caches.keys();
+      await Promise.all(cacheNames.map(name => caches.delete(name)));
+    }
+    window.location.reload();
+  }
+
+  return {
+    isChecking,
+    hasUpdate,
+    currentVersion,
+    latestVersion,
+    checkForUpdate,
+    applyUpdate,
+    forceReload,
+  };
+}
diff --git a/src/composables/useCacheSize.ts b/src/composables/useCacheSize.ts
new file mode 100644
index 0000000..e9318c2
--- /dev/null
+++ b/src/composables/useCacheSize.ts
@@ -0,0 +1,122 @@
+/**
+ * 获取应用缓存大小的组合式函数
+ */
+export function useCacheSize() {
+  const cacheSize = ref<string>("计算中...");
+  const isLoading = ref(false);
+
+  /**
+   * 计算当前应用使用的缓存大小
+   */
+  async function calculateCacheSize() {
+    isLoading.value = true;
+    try {
+      if ("storage" in navigator && "estimate" in navigator.storage) {
+        // 使用 Storage API 获取精确的存储使用量
+        const estimate = await navigator.storage.estimate();
+        const usageInMB = ((estimate.usage || 0) / (1024 * 1024)).toFixed(2);
+        cacheSize.value = `${usageInMB} MB`;
+      }
+      else {
+        // 降级方案：计算 localStorage 大小
+        let totalSize = 0;
+        for (const key in localStorage) {
+          if (Object.prototype.hasOwnProperty.call(localStorage, key)) {
+            totalSize += localStorage[key].length + key.length;
+          }
+        }
+        const sizeInKB = (totalSize / 1024).toFixed(2);
+        cacheSize.value = `${sizeInKB} KB (仅 localStorage)`;
+      }
+    }
+    catch (error) {
+      console.error("计算缓存大小失败:", error);
+      cacheSize.value = "未知";
+    }
+    finally {
+      isLoading.value = false;
+    }
+  }
+
+  /**
+   * 获取缓存大小的原始字节数
+   */
+  async function getCacheSizeInBytes(): Promise<number> {
+    try {
+      if ("storage" in navigator && "estimate" in navigator.storage) {
+        const estimate = await navigator.storage.estimate();
+        return estimate.usage || 0;
+      }
+      else {
+        let totalSize = 0;
+        for (const key in localStorage) {
+          if (Object.prototype.hasOwnProperty.call(localStorage, key)) {
+            totalSize += localStorage[key].length + key.length;
+          }
+        }
+        return totalSize;
+      }
+    }
+    catch (error) {
+      console.error("获取缓存大小失败:", error);
+      return 0;
+    }
+  }
+
+  /**
+   * 清除应用缓存
+   */
+  async function clearCache(): Promise<void> {
+    isLoading.value = true;
+    try {
+      // 清除 localStorage
+      localStorage.clear();
+
+      // 清除 sessionStorage
+      sessionStorage.clear();
+
+      // 清除 Cache API 缓存
+      if ("caches" in window) {
+        const cacheNames = await caches.keys();
+        await Promise.all(
+          cacheNames.map(cacheName => caches.delete(cacheName)),
+        );
+      }
+
+      // 清除 IndexedDB（如果需要）
+      if ("indexedDB" in window) {
+        const databases = await indexedDB.databases();
+        await Promise.all(
+          databases.map((db) => {
+            if (db.name) {
+              return new Promise<void>((resolve, reject) => {
+                const request = indexedDB.deleteDatabase(db.name!);
+                request.onsuccess = () => resolve();
+                request.onerror = () => reject(request.error);
+              });
+            }
+            return Promise.resolve();
+          }),
+        );
+      }
+
+      // 重新计算缓存大小
+      await calculateCacheSize();
+    }
+    catch (error) {
+      console.error("清除缓存失败:", error);
+      throw error;
+    }
+    finally {
+      isLoading.value = false;
+    }
+  }
+
+  return {
+    cacheSize,
+    isLoading,
+    calculateCacheSize,
+    getCacheSizeInBytes,
+    clearCache,
+  };
+}
diff --git a/src/router/index.ts b/src/router/index.ts
index 2f274a8..7e9e712 100644
--- a/src/router/index.ts
+++ b/src/router/index.ts
@@ -53,6 +53,10 @@ const routes: Array<RouteRecordRaw> = [
     path: "/user/settings",
     component: () => import("@/views/user/settings.vue"),
   },
+  {
+    path: "/system-settings",
+    component: () => import("@/views/system-settings/index.vue"),
+  },
   {
     path: "/issue/issuing-apply",
     props: ({ query, params }) => ({ query, params }),
diff --git a/src/views/system-settings/index.vue b/src/views/system-settings/index.vue
new file mode 100644
index 0000000..1801baf
--- /dev/null
+++ b/src/views/system-settings/index.vue
@@ -0,0 +1,164 @@
+<script lang="ts" setup>
+import { alertController, toastController } from "@ionic/vue";
+import { checkbox, close, information, languageOutline, refresh } from "ionicons/icons";
+
+const { cacheSize, calculateCacheSize, clearCache } = useCacheSize();
+const { isChecking, checkForUpdate } = useAppUpdate();
+
+function handleClearCache() {
+  clearCache();
+  calculateCacheSize();
+  toastController.create({
+    message: "缓存已清除",
+    duration: 2000,
+    icon: checkbox,
+    position: "bottom",
+    color: "success",
+  }).then(toast => toast.present());
+}
+
+async function handleCheckUpdate() {
+  try {
+    const result = await checkForUpdate();
+
+    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"}`,
+        buttons: [
+          {
+            text: "取消",
+            role: "cancel",
+          },
+          {
+            text: "立即更新",
+            handler: () => {
+              window.location.reload();
+            },
+          },
+        ],
+      });
+      await alert.present();
+    }
+    else {
+      const toast = await toastController.create({
+        message: "已是最新版本",
+        duration: 2000,
+        icon: checkbox,
+        position: "bottom",
+        color: "success",
+      });
+      await toast.present();
+    }
+  }
+  catch (error) {
+    const toast = await toastController.create({
+      message: "检查更新失败",
+      duration: 2000,
+      position: "bottom",
+      color: "danger",
+    });
+    await toast.present();
+  }
+}
+
+onMounted(() => {
+  calculateCacheSize();
+});
+</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-list lines="full">
+        <ion-list-header>
+          <ion-label>设置</ion-label>
+        </ion-list-header>
+        <ion-item button>
+          <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
+              </div>
+            </div>
+            <div class="end">
+              简体中文
+            </div>
+          </div>
+        </ion-item>
+        <ion-item button>
+          <div class="flex justify-between w-full items-center">
+            <div class="flex-center space-x-2">
+              <div class="icon">
+                <ion-icon :icon="information" class="text-lg" />
+              </div>
+              <div class="text-sm font-semibold">
+                关于我们
+              </div>
+            </div>
+          </div>
+        </ion-item>
+        <ion-item button @click="handleClearCache">
+          <div class="flex justify-between w-full items-center">
+            <div class="flex-center space-x-2">
+              <div class="icon">
+                <ion-icon :icon="close" class="text-lg" />
+              </div>
+              <div class="text-sm font-semibold">
+                清除缓存
+              </div>
+            </div>
+            <div class="end">
+              {{ cacheSize }}
+            </div>
+          </div>
+        </ion-item>
+        <ion-item button @click="handleCheckUpdate">
+          <div class="flex justify-between w-full items-center">
+            <div class="flex-center space-x-2">
+              <div class="icon">
+                <ion-icon :icon="refresh" class="text-lg" :class="{ 'animate-spin': isChecking }" />
+              </div>
+              <div class="text-sm font-semibold">
+                检查更新
+              </div>
+            </div>
+          </div>
+        </ion-item>
+      </ion-list>
+    </ion-content>
+  </ion-page>
+</template>
+
+<style lang='css' scoped>
+@reference "tailwindcss";
+
+ion-item {
+  --padding-start: 0;
+  --padding-end: 0;
+  --padding-top: 6px;
+  --padding-bottom: 6px;
+  border-radius: 0.25rem;
+}
+
+.end {
+  @apply text-sm text-gray-500;
+}
+
+.icon {
+  @apply bg-[#1c1c1c] text-white;
+}
+
+.icon {
+  @apply rounded-lg p-2 w-7 h-7 flex items-center justify-center;
+}
+</style>
diff --git a/src/views/user/components/user-info.vue b/src/views/user/components/user-info.vue
index 6897007..01b816f 100644
--- a/src/views/user/components/user-info.vue
+++ b/src/views/user/components/user-info.vue
@@ -6,14 +6,14 @@ const { user } = useAuth();
 
 <template>
   <div class="user-info-container">
-    <div class="user-info">
+    <div class="user-info" @click="$router.push('/user/settings')">
       <ui-avatar class="size-18" />
       <div>
         <div class="user-name">
           {{ user?.email }}
         </div>
-        <div class="user-uid mt-2 text-sm text-text-100">
-          UID: 95223143 <ion-icon :icon="copyOutline" />
+        <div class="user-uid mt-1 text-xs text-text-100">
+          UID: 95223143
         </div>
       </div>
     </div>
diff --git a/src/views/user/index.vue b/src/views/user/index.vue
index 02e5093..a983851 100644
--- a/src/views/user/index.vue
+++ b/src/views/user/index.vue
@@ -31,7 +31,7 @@ async function handleRefresh(event: RefresherCustomEvent) {
           <ion-button fill="clear">
             <ion-icon slot="icon-only" :icon="notificationsOutline" />
           </ion-button>
-          <ion-button fill="clear" router-link="/user/settings">
+          <ion-button fill="clear" router-link="/system-settings">
             <ion-icon slot="icon-only" :icon="settingsOutline" />
           </ion-button>
         </div>