diff --git a/server/src/config/database.js b/server/src/config/database.js
index 865dcdd..54f90fe 100644
--- a/server/src/config/database.js
+++ b/server/src/config/database.js
@@ -200,8 +200,33 @@ function parseJSON(str, defaultValue) {
   }
 }
 
+// 刷新缓存 - 从数据库重新加载所有数据
+async function refreshCache() {
+  if (!pool) return false;
+
+  try {
+    const [posts] = await pool.execute('SELECT * FROM posts ORDER BY date DESC');
+    const [settings] = await pool.execute('SELECT * FROM settings WHERE id = 1');
+    const [about] = await pool.execute('SELECT * FROM about WHERE id = 1');
+
+    memoryStore.posts = posts;
+    if (settings.length > 0) {
+      memoryStore.settings = formatSettings(settings[0]);
+    }
+    if (about.length > 0) {
+      memoryStore.about = formatAbout(about[0]);
+    }
+
+    console.log('✅ 缓存已刷新');
+    return true;
+  } catch (error) {
+    console.error('缓存刷新失败:', error.message);
+    return false;
+  }
+}
+
 function getPool() {
   return pool;
 }
 
-module.exports = { initDatabase, getPool };
\ No newline at end of file
+module.exports = { initDatabase, getPool, refreshCache };
\ No newline at end of file
diff --git a/server/src/index.js b/server/src/index.js
index b7e74db..3902d69 100644
--- a/server/src/index.js
+++ b/server/src/index.js
@@ -18,12 +18,14 @@ const aboutRouter = require('./routes/about');
 const settingsRouter = require('./routes/settings');
 const cronRouter = require('./routes/cron');
 const configRouter = require('./routes/config');
+const cacheRouter = require('./routes/cache');
 
 app.use('/api/posts', postsRouter);
 app.use('/api/about', aboutRouter);
 app.use('/api/settings', settingsRouter);
 app.use('/api/cron-tasks', cronRouter);
 app.use('/api/config', configRouter);
+app.use('/api/cache', cacheRouter);
 
 // 健康检查
 app.get('/api/health', (req, res) => {
diff --git a/server/src/routes/cache.js b/server/src/routes/cache.js
new file mode 100644
index 0000000..99c14f3
--- /dev/null
+++ b/server/src/routes/cache.js
@@ -0,0 +1,20 @@
+const express = require('express');
+const router = express.Router();
+const { refreshCache } = require('../config/database');
+
+// 刷新所有缓存（posts, settings, about）
+router.post('/refresh', async (req, res) => {
+  try {
+    const success = await refreshCache();
+    if (success) {
+      res.json({ message: '缓存已刷新', success: true });
+    } else {
+      res.status(500).json({ error: '缓存刷新失败', success: false });
+    }
+  } catch (error) {
+    console.error('缓存刷新失败:', error);
+    res.status(500).json({ error: '缓存刷新失败', success: false });
+  }
+});
+
+module.exports = router;
\ No newline at end of file
diff --git a/src/i18n/index.js b/src/i18n/index.js
index a92ca96..3c1a6cc 100644
--- a/src/i18n/index.js
+++ b/src/i18n/index.js
@@ -48,7 +48,12 @@ export const messages = {
       uploadIcon: '上传图标',
       defaultIcon: '恢复默认',
       myIcons: '我的图标库',
-      myImages: '我的图片库'
+      myImages: '我的图片库',
+      dataCache: '数据缓存',
+      refreshCache: '刷新缓存',
+      refreshCacheDesc: '直接从数据库重新加载数据，清除内存缓存',
+      refreshSuccess: '缓存已刷新',
+      refreshFailed: '刷新失败'
     },
     serverConfig: {
       title: '服务端配置',
@@ -177,7 +182,12 @@ export const messages = {
       uploadIcon: 'Upload Icon',
       defaultIcon: 'Reset Default',
       myIcons: 'My Icons',
-      myImages: 'My Images'
+      myImages: 'My Images',
+      dataCache: 'Data Cache',
+      refreshCache: 'Refresh Cache',
+      refreshCacheDesc: 'Reload data directly from database, clear memory cache',
+      refreshSuccess: 'Cache refreshed',
+      refreshFailed: 'Refresh failed'
     },
     serverConfig: {
       title: 'Server Config',
diff --git a/src/views/SettingsView.vue b/src/views/SettingsView.vue
index 6be756c..82e5151 100644
--- a/src/views/SettingsView.vue
+++ b/src/views/SettingsView.vue
@@ -23,6 +23,8 @@ const bgImagePresets = [
 ]
 
 const isUploading = ref(false)
+const isRefreshing = ref(false)
+const refreshMessage = ref('')
 
 function onBgTypeChange(value) {
   settings.setBgType(value)
@@ -205,6 +207,24 @@ function deleteUploadedIcon(id) {
 function resetFavicon() {
   settings.setFavicon('')
 }
+
+async function refreshCache() {
+  isRefreshing.value = true
+  refreshMessage.value = ''
+  try {
+    const res = await fetch('/api/cache/refresh', { method: 'POST' })
+    const data = await res.json()
+    if (data.success) {
+      refreshMessage.value = t('settings.refreshSuccess')
+    } else {
+      refreshMessage.value = t('settings.refreshFailed')
+    }
+    setTimeout(() => { refreshMessage.value = '' }, 3000)
+  } catch (e) {
+    refreshMessage.value = t('settings.refreshFailed')
+  }
+  isRefreshing.value = false
+}
 </script>
 
 <template>
@@ -410,6 +430,24 @@ function resetFavicon() {
         ></div>
       </div>
     </div>
+
+    <div class="settings-section">
+      <h2>{{ t('settings.dataCache') }}</h2>
+      <div class="setting-item">
+        <label>{{ t('settings.refreshCache') }}</label>
+        <p class="cache-desc">{{ t('settings.refreshCacheDesc') }}</p>
+        <div class="cache-actions">
+          <button
+            class="btn-refresh"
+            @click="refreshCache"
+            :disabled="isRefreshing"
+          >
+            {{ isRefreshing ? t('settings.uploading') : t('settings.refreshCache') }}
+          </button>
+          <span v-if="refreshMessage" class="refresh-message">{{ refreshMessage }}</span>
+        </div>
+      </div>
+    </div>
   </div>
 </template>
 
@@ -768,4 +806,40 @@ function resetFavicon() {
 .btn-reset:hover {
   background: #ccc;
 }
+
+.cache-desc {
+  font-size: 0.85rem;
+  color: var(--color-text-secondary);
+  margin-bottom: 0.75rem;
+}
+
+.cache-actions {
+  display: flex;
+  align-items: center;
+  gap: 1rem;
+}
+
+.btn-refresh {
+  background: var(--color-primary);
+  color: white;
+  padding: 0.5rem 1rem;
+  border-radius: 4px;
+  border: none;
+  cursor: pointer;
+  font-size: 0.9rem;
+}
+
+.btn-refresh:hover {
+  opacity: 0.9;
+}
+
+.btn-refresh:disabled {
+  opacity: 0.6;
+  cursor: not-allowed;
+}
+
+.refresh-message {
+  font-size: 0.85rem;
+  color: var(--color-primary);
+}
 </style>
\ No newline at end of file