diff --git a/static/js/app.js b/static/js/app.js
index 7b49337..73e8878 100644
--- a/static/js/app.js
+++ b/static/js/app.js
@@ -85,13 +85,13 @@ const elements = {
     // 注册后自动操作
     autoUploadCpa: document.getElementById('auto-upload-cpa'),
     cpaServiceSelectGroup: document.getElementById('cpa-service-select-group'),
-    cpaServiceCheckboxes: document.getElementById('cpa-service-checkboxes'),
+    cpaServiceSelect: document.getElementById('cpa-service-select'),
     autoUploadSub2api: document.getElementById('auto-upload-sub2api'),
     sub2apiServiceSelectGroup: document.getElementById('sub2api-service-select-group'),
-    sub2apiServiceCheckboxes: document.getElementById('sub2api-service-checkboxes'),
+    sub2apiServiceSelect: document.getElementById('sub2api-service-select'),
     autoUploadTm: document.getElementById('auto-upload-tm'),
     tmServiceSelectGroup: document.getElementById('tm-service-select-group'),
-    tmServiceCheckboxes: document.getElementById('tm-service-checkboxes'),
+    tmServiceSelect: document.getElementById('tm-service-select'),
 };
 
 // 初始化
@@ -108,14 +108,14 @@ document.addEventListener('DOMContentLoaded', () => {
 // 初始化注册后自动操作选项（CPA / Sub2API / TM）
 async function initAutoUploadOptions() {
     await Promise.all([
-        loadServiceCheckboxes('cpa', '/cpa-services?enabled=true', elements.cpaServiceCheckboxes, elements.autoUploadCpa, elements.cpaServiceSelectGroup),
-        loadServiceCheckboxes('sub2api', '/sub2api-services?enabled=true', elements.sub2apiServiceCheckboxes, elements.autoUploadSub2api, elements.sub2apiServiceSelectGroup),
-        loadServiceCheckboxes('tm', '/tm-services?enabled=true', elements.tmServiceCheckboxes, elements.autoUploadTm, elements.tmServiceSelectGroup),
+        loadServiceSelect('/cpa-services?enabled=true', elements.cpaServiceSelect, elements.autoUploadCpa, elements.cpaServiceSelectGroup),
+        loadServiceSelect('/sub2api-services?enabled=true', elements.sub2apiServiceSelect, elements.autoUploadSub2api, elements.sub2apiServiceSelectGroup),
+        loadServiceSelect('/tm-services?enabled=true', elements.tmServiceSelect, elements.autoUploadTm, elements.tmServiceSelectGroup),
     ]);
 }
 
-// 通用：加载服务 checkbox 列表，并处理联动
-async function loadServiceCheckboxes(type, apiPath, container, checkbox, selectGroup) {
+// 通用：构建自定义多选下拉组件并处理联动
+async function loadServiceSelect(apiPath, container, checkbox, selectGroup) {
     if (!checkbox || !container) return;
     let services = [];
     try {
@@ -127,14 +127,31 @@ async function loadServiceCheckboxes(type, apiPath, container, checkbox, selectG
         checkbox.title = '请先在设置中添加对应服务';
         const label = checkbox.closest('label');
         if (label) label.style.opacity = '0.5';
-        if (container) container.innerHTML = '<div style="color:var(--text-muted);font-size:0.8rem;">暂无可用服务</div>';
+        container.innerHTML = '<div class="msd-empty">暂无可用服务</div>';
     } else {
-        container.innerHTML = services.map(s => `
-            <label style="display:flex;align-items:center;gap:6px;cursor:pointer;">
-                <input type="checkbox" class="upload-svc-cb upload-svc-${type}" value="${s.id}" checked>
-                <span style="font-size:0.85rem;">${escapeHtml(s.name)}</span>
-            </label>
-        `).join('');
+        const items = services.map(s =>
+            `<label class="msd-item">
+                <input type="checkbox" value="${s.id}" checked>
+                <span>${escapeHtml(s.name)}</span>
+            </label>`
+        ).join('');
+        container.innerHTML = `
+            <div class="msd-dropdown" id="${container.id}-dd">
+                <div class="msd-trigger" onclick="toggleMsd('${container.id}-dd')">
+                    <span class="msd-label">全部 (${services.length})</span>
+                    <span class="msd-arrow">▼</span>
+                </div>
+                <div class="msd-list">${items}</div>
+            </div>`;
+        // 监听 checkbox 变化，更新触发器文字
+        container.querySelectorAll('.msd-item input').forEach(cb => {
+            cb.addEventListener('change', () => updateMsdLabel(container.id + '-dd'));
+        });
+        // 点击外部关闭
+        document.addEventListener('click', (e) => {
+            const dd = document.getElementById(container.id + '-dd');
+            if (dd && !dd.contains(e.target)) dd.classList.remove('open');
+        }, true);
     }
 
     // 联动显示/隐藏服务选择区
@@ -143,13 +160,27 @@ async function loadServiceCheckboxes(type, apiPath, container, checkbox, selectG
     });
 }
 
-// 获取选中的服务 ID 列表
-function getCheckedServiceIds(type) {
-    const ids = [];
-    document.querySelectorAll(`.upload-svc-${type}:checked`).forEach(cb => {
-        ids.push(parseInt(cb.value));
-    });
-    return ids;
+function toggleMsd(ddId) {
+    const dd = document.getElementById(ddId);
+    if (dd) dd.classList.toggle('open');
+}
+
+function updateMsdLabel(ddId) {
+    const dd = document.getElementById(ddId);
+    if (!dd) return;
+    const all = dd.querySelectorAll('.msd-item input');
+    const checked = dd.querySelectorAll('.msd-item input:checked');
+    const label = dd.querySelector('.msd-label');
+    if (!label) return;
+    if (checked.length === 0) label.textContent = '未选择';
+    else if (checked.length === all.length) label.textContent = `全部 (${all.length})`;
+    else label.textContent = Array.from(checked).map(c => c.nextElementSibling.textContent).join(', ');
+}
+
+// 获取自定义多选下拉中选中的服务 ID 列表
+function getSelectedServiceIds(container) {
+    if (!container) return [];
+    return Array.from(container.querySelectorAll('.msd-item input:checked')).map(cb => parseInt(cb.value));
 }
 
 // 事件监听
@@ -395,11 +426,11 @@ async function handleStartRegistration(e) {
     const requestData = {
         email_service_type: emailServiceType,
         auto_upload_cpa: elements.autoUploadCpa ? elements.autoUploadCpa.checked : false,
-        cpa_service_ids: elements.autoUploadCpa && elements.autoUploadCpa.checked ? getCheckedServiceIds('cpa') : [],
+        cpa_service_ids: elements.autoUploadCpa && elements.autoUploadCpa.checked ? getSelectedServiceIds(elements.cpaServiceSelect) : [],
         auto_upload_sub2api: elements.autoUploadSub2api ? elements.autoUploadSub2api.checked : false,
-        sub2api_service_ids: elements.autoUploadSub2api && elements.autoUploadSub2api.checked ? getCheckedServiceIds('sub2api') : [],
+        sub2api_service_ids: elements.autoUploadSub2api && elements.autoUploadSub2api.checked ? getSelectedServiceIds(elements.sub2apiServiceSelect) : [],
         auto_upload_tm: elements.autoUploadTm ? elements.autoUploadTm.checked : false,
-        tm_service_ids: elements.autoUploadTm && elements.autoUploadTm.checked ? getCheckedServiceIds('tm') : [],
+        tm_service_ids: elements.autoUploadTm && elements.autoUploadTm.checked ? getSelectedServiceIds(elements.tmServiceSelect) : [],
     };
 
     // 如果选择了数据库中的服务，传递 service_id
@@ -1099,11 +1130,11 @@ async function handleOutlookBatchRegistration() {
         concurrency: Math.min(50, Math.max(1, concurrency)),
         mode: mode,
         auto_upload_cpa: elements.autoUploadCpa ? elements.autoUploadCpa.checked : false,
-        cpa_service_ids: elements.autoUploadCpa && elements.autoUploadCpa.checked ? getCheckedServiceIds('cpa') : [],
+        cpa_service_ids: elements.autoUploadCpa && elements.autoUploadCpa.checked ? getSelectedServiceIds(elements.cpaServiceSelect) : [],
         auto_upload_sub2api: elements.autoUploadSub2api ? elements.autoUploadSub2api.checked : false,
-        sub2api_service_ids: elements.autoUploadSub2api && elements.autoUploadSub2api.checked ? getCheckedServiceIds('sub2api') : [],
+        sub2api_service_ids: elements.autoUploadSub2api && elements.autoUploadSub2api.checked ? getSelectedServiceIds(elements.sub2apiServiceSelect) : [],
         auto_upload_tm: elements.autoUploadTm ? elements.autoUploadTm.checked : false,
-        tm_service_ids: elements.autoUploadTm && elements.autoUploadTm.checked ? getCheckedServiceIds('tm') : [],
+        tm_service_ids: elements.autoUploadTm && elements.autoUploadTm.checked ? getSelectedServiceIds(elements.tmServiceSelect) : [],
     };
 
     addLog('info', `[系统] 正在启动 Outlook 批量注册 (${selectedIds.length} 个账户)...`);
diff --git a/static/js/settings.js b/static/js/settings.js
index 47f4468..4dc3a9e 100644
--- a/static/js/settings.js
+++ b/static/js/settings.js
@@ -1076,7 +1076,7 @@ function renderTmServicesTable(services) {
                 </span>
             </td>
             <td style="text-align:center;">${s.priority}</td>
-            <td>
+            <td style="white-space:nowrap;">
                 <button class="btn btn-secondary btn-sm" onclick="editTmService(${s.id})">编辑</button>
                 <button class="btn btn-secondary btn-sm" onclick="testTmServiceById(${s.id})">测试</button>
                 <button class="btn btn-danger btn-sm" onclick="deleteTmService(${s.id}, '${escapeHtml(s.name)}')">删除</button>
@@ -1241,7 +1241,7 @@ function renderCpaServicesTable(services) {
                 </span>
             </td>
             <td style="text-align:center;">${s.priority}</td>
-            <td>
+            <td style="white-space:nowrap;">
                 <button class="btn btn-secondary btn-sm" onclick="editCpaService(${s.id})">编辑</button>
                 <button class="btn btn-secondary btn-sm" onclick="testCpaServiceById(${s.id})">测试</button>
                 <button class="btn btn-danger btn-sm" onclick="deleteCpaService(${s.id}, '${escapeHtml(s.name)}')">删除</button>
@@ -1395,20 +1395,23 @@ async function loadSub2ApiServices() {
 function renderSub2ApiServices(services) {
     if (!elements.sub2ApiServicesTable) return;
     if (!services || services.length === 0) {
-        elements.sub2ApiServicesTable.innerHTML = '<tr><td colspan="5" style="text-align:center;color:var(--text-muted);padding:20px;">暂无服务，点击"添加服务"按钮添加</td></tr>';
+        elements.sub2ApiServicesTable.innerHTML = '<tr><td colspan="5" style="text-align:center;color:var(--text-muted);padding:20px;">暂无 Sub2API 服务，点击「添加服务」新增</td></tr>';
         return;
     }
     elements.sub2ApiServicesTable.innerHTML = services.map(s => `
         <tr>
             <td>${escapeHtml(s.name)}</td>
-            <td><code>${escapeHtml(s.api_url)}</code></td>
-            <td><span class="status-badge ${s.enabled ? 'active' : 'disabled'}">${s.enabled ? '已启用' : '已禁用'}</span></td>
-            <td>${s.priority}</td>
+            <td style="font-size:0.85rem;color:var(--text-muted);">${escapeHtml(s.api_url)}</td>
             <td>
-                <div class="action-buttons">
-                    <button class="btn btn-ghost btn-sm" onclick="editSub2ApiService(${s.id})" title="编辑">✏️</button>
-                    <button class="btn btn-ghost btn-sm" onclick="deleteSub2ApiService(${s.id}, '${escapeHtml(s.name)}')" title="删除">🗑️</button>
-                </div>
+                <span class="badge" style="background:${s.enabled ? 'var(--success-color)' : 'var(--border)'};color:${s.enabled ? '#fff' : 'var(--text-muted)'};font-size:0.75rem;padding:2px 8px;border-radius:10px;">
+                    ${s.enabled ? '启用' : '禁用'}
+                </span>
+            </td>
+            <td style="text-align:center;">${s.priority}</td>
+            <td style="white-space:nowrap;">
+                <button class="btn btn-secondary btn-sm" onclick="editSub2ApiService(${s.id})">编辑</button>
+                <button class="btn btn-secondary btn-sm" onclick="testSub2ApiServiceById(${s.id})">测试</button>
+                <button class="btn btn-danger btn-sm" onclick="deleteSub2ApiService(${s.id}, '${escapeHtml(s.name)}')">删除</button>
             </td>
         </tr>
     `).join('');
@@ -1486,6 +1489,19 @@ async function handleSaveSub2ApiService(e) {
     }
 }
 
+async function testSub2ApiServiceById(id) {
+    try {
+        const result = await api.post(`/sub2api-services/${id}/test`);
+        if (result.success) {
+            toast.success(result.message);
+        } else {
+            toast.error(result.message);
+        }
+    } catch (e) {
+        toast.error('测试失败: ' + e.message);
+    }
+}
+
 async function handleTestSub2ApiService() {
     const apiUrl = document.getElementById('sub2api-service-url').value.trim();
     const apiKey = document.getElementById('sub2api-service-key').value.trim();
diff --git a/templates/index.html b/templates/index.html
index 62d4a21..12b9602 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -83,6 +83,53 @@
             filter: blur(0);
         }
 
+        /* 自定义多选下拉 */
+        .multi-select-dropdown {
+            position: relative;
+            width: 100%;
+            font-size: 0.85rem;
+        }
+        .msd-trigger {
+            display: flex;
+            align-items: center;
+            justify-content: space-between;
+            padding: 5px 10px;
+            border: 1px solid var(--border);
+            border-radius: 6px;
+            background: var(--surface);
+            color: var(--text-primary);
+            cursor: pointer;
+            user-select: none;
+        }
+        .msd-trigger:hover { border-color: var(--primary-color); }
+        .msd-arrow { font-size: 0.7rem; transition: transform 0.15s; }
+        .msd-dropdown.open .msd-arrow { transform: rotate(180deg); }
+        .msd-list {
+            display: none;
+            position: absolute;
+            top: calc(100% + 4px);
+            left: 0; right: 0;
+            background: var(--surface);
+            border: 1px solid var(--border);
+            border-radius: 6px;
+            box-shadow: 0 4px 12px rgba(0,0,0,0.12);
+            z-index: 100;
+            max-height: 150px;
+            overflow-y: auto;
+            padding: 4px 0;
+        }
+        .msd-dropdown.open .msd-list { display: block; }
+        .msd-item {
+            display: flex;
+            align-items: center;
+            gap: 8px;
+            padding: 6px 12px;
+            cursor: pointer;
+        }
+        .msd-item:hover { background: var(--surface-hover); }
+        .msd-item input[type=checkbox] { margin: 0; cursor: pointer; }
+        .msd-empty { padding: 8px 12px; color: var(--text-muted); font-size: 0.8rem; }
+
         /* 响应式 */
         @media (max-width: 1024px) {
             .two-column-layout {
@@ -231,8 +278,7 @@
                                         <span>上传到 CPA</span>
                                     </label>
                                     <div id="cpa-service-select-group" style="display:none; margin-top: 6px; margin-bottom: 8px; padding-left: 4px;">
-                                        <label style="font-size:0.85rem; color:var(--text-muted); margin-bottom:4px; display:block;">选择 CPA 服务（可多选）</label>
-                                        <div id="cpa-service-checkboxes" style="display:flex; flex-direction:column; gap:4px; max-height:120px; overflow-y:auto; border:1px solid var(--border); border-radius:6px; padding:6px;"></div>
+                                        <div class="multi-select-dropdown" id="cpa-service-select"></div>
                                     </div>
 
                                     <!-- Sub2API -->
@@ -241,8 +287,7 @@
                                         <span>上传到 Sub2API</span>
                                     </label>
                                     <div id="sub2api-service-select-group" style="display:none; margin-top: 6px; margin-bottom: 8px; padding-left: 4px;">
-                                        <label style="font-size:0.85rem; color:var(--text-muted); margin-bottom:4px; display:block;">选择 Sub2API 服务（可多选）</label>
-                                        <div id="sub2api-service-checkboxes" style="display:flex; flex-direction:column; gap:4px; max-height:120px; overflow-y:auto; border:1px solid var(--border); border-radius:6px; padding:6px;"></div>
+                                        <div class="multi-select-dropdown" id="sub2api-service-select"></div>
                                     </div>
 
                                     <!-- Team Manager -->
@@ -251,8 +296,7 @@
                                         <span>上传到 Team Manager</span>
                                     </label>
                                     <div id="tm-service-select-group" style="display:none; margin-top: 6px; padding-left: 4px;">
-                                        <label style="font-size:0.85rem; color:var(--text-muted); margin-bottom:4px; display:block;">选择 TM 服务（可多选）</label>
-                                        <div id="tm-service-checkboxes" style="display:flex; flex-direction:column; gap:4px; max-height:120px; overflow-y:auto; border:1px solid var(--border); border-radius:6px; padding:6px;"></div>
+                                        <div class="multi-select-dropdown" id="tm-service-select"></div>
                                     </div>
                                 </div>
 
diff --git a/templates/settings.html b/templates/settings.html
index 82a89ed..91cda3e 100644
--- a/templates/settings.html
+++ b/templates/settings.html
@@ -214,11 +214,11 @@
                             <table class="data-table">
                                 <thead>
                                     <tr>
-                                        <th>名称</th>
+                                        <th style="width:150px;">名称</th>
                                         <th>API URL</th>
                                         <th style="width:80px;">状态</th>
-                                        <th style="width:60px;">优先级</th>
-                                        <th style="width:160px;">操作</th>
+                                        <th style="width:60px;text-align:center;">优先级</th>
+                                        <th style="width:220px;">操作</th>
                                     </tr>
                                 </thead>
                                 <tbody id="cpa-services-table">
@@ -240,11 +240,11 @@
                             <table class="data-table">
                                 <thead>
                                     <tr>
-                                        <th>名称</th>
+                                        <th style="width:150px;">名称</th>
                                         <th>API URL</th>
                                         <th style="width:80px;">状态</th>
-                                        <th style="width:60px;">优先级</th>
-                                        <th style="width:160px;">操作</th>
+                                        <th style="width:60px;text-align:center;">优先级</th>
+                                        <th style="width:220px;">操作</th>
                                     </tr>
                                 </thead>
                                 <tbody id="sub2api-services-table">
@@ -266,11 +266,11 @@
                             <table class="data-table">
                                 <thead>
                                     <tr>
-                                        <th>名称</th>
+                                        <th style="width:150px;">名称</th>
                                         <th>API URL</th>
                                         <th style="width:80px;">状态</th>
-                                        <th style="width:60px;">优先级</th>
-                                        <th style="width:160px;">操作</th>
+                                        <th style="width:60px;text-align:center;">优先级</th>
+                                        <th style="width:220px;">操作</th>
                                     </tr>
                                 </thead>
                                 <tbody id="tm-services-table">