diff --git a/src/ui-manager.js b/src/ui-manager.js
index f1213fb..2f7276a 100644
--- a/src/ui-manager.js
+++ b/src/ui-manager.js
@@ -478,6 +478,46 @@ export async function handleUIApiRequests(method, pathParam, req, res, currentCo
         return true;
     }
 
+    // Update admin password
+    if (method === 'POST' && pathParam === '/api/admin-password') {
+        try {
+            const body = await getRequestBody(req);
+            const { password } = body;
+
+            if (!password || password.trim() === '') {
+                res.writeHead(400, { 'Content-Type': 'application/json' });
+                res.end(JSON.stringify({
+                    error: {
+                        message: '密码不能为空'
+                    }
+                }));
+                return true;
+            }
+
+            // 写入密码到 pwd 文件
+            const pwdFilePath = path.join(process.cwd(), 'pwd');
+            await fs.writeFile(pwdFilePath, password.trim(), 'utf8');
+            
+            console.log('[UI API] Admin password updated successfully');
+
+            res.writeHead(200, { 'Content-Type': 'application/json' });
+            res.end(JSON.stringify({
+                success: true,
+                message: '后台登录密码已更新'
+            }));
+            return true;
+        } catch (error) {
+            console.error('[UI API] Failed to update admin password:', error);
+            res.writeHead(500, { 'Content-Type': 'application/json' });
+            res.end(JSON.stringify({
+                error: {
+                    message: '更新密码失败: ' + error.message
+                }
+            }));
+            return true;
+        }
+    }
+
     // Get configuration
     if (method === 'GET' && pathParam === '/api/config') {
         let systemPrompt = '';
diff --git a/static/app/config-manager.js b/static/app/config-manager.js
index d7214d7..27a9fd2 100644
--- a/static/app/config-manager.js
+++ b/static/app/config-manager.js
@@ -133,6 +133,9 @@ async function saveConfiguration() {
         systemPrompt: document.getElementById('systemPrompt')?.value || '',
     };
 
+    // 获取后台登录密码（如果有输入）
+    const adminPassword = document.getElementById('adminPassword')?.value || '';
+
     // 根据不同提供商保存不同的配置
     const provider = document.getElementById('modelProvider')?.value;
     
@@ -194,6 +197,21 @@ async function saveConfiguration() {
 
     try {
         await window.apiClient.post('/config', config);
+        
+        // 如果输入了新密码，单独保存密码
+        if (adminPassword) {
+            try {
+                await window.apiClient.post('/admin-password', { password: adminPassword });
+                // 清空密码输入框
+                const adminPasswordEl = document.getElementById('adminPassword');
+                if (adminPasswordEl) adminPasswordEl.value = '';
+                showToast('后台密码已更新，下次登录生效', 'success');
+            } catch (pwdError) {
+                console.error('Failed to save admin password:', pwdError);
+                showToast('保存后台密码失败: ' + pwdError.message, 'error');
+            }
+        }
+        
         await window.apiClient.post('/reload-config');
         showToast('配置已保存', 'success');
         
diff --git a/static/index.html b/static/index.html
index 6a11099..ce62cbf 100644
--- a/static/index.html
+++ b/static/index.html
@@ -711,6 +711,18 @@
                                     <label for="systemPrompt">系统提示</label>
                                     <textarea id="systemPrompt" class="form-control" rows="4" placeholder="输入系统提示..."></textarea>
                                 </div>
+                                
+                                <!-- 后台登录密码配置 -->
+                                <div class="form-group pool-section">
+                                    <label for="adminPassword">后台登录密码</label>
+                                    <div class="password-input-wrapper">
+                                        <input type="password" id="adminPassword" class="form-control" placeholder="设置后台登录密码（留空则不修改）" autocomplete="new-password">
+                                        <button type="button" class="password-toggle" data-target="adminPassword" aria-label="显示/隐藏密码">
+                                            <i class="fas fa-eye" aria-hidden="true"></i>
+                                        </button>
+                                    </div>
+                                    <small class="form-text">用于保护管理控制台的访问，修改后需要重新登录</small>
+                                </div>
                             </div>
                             
                             <div class="form-actions">