diff --git a/.ua/index.json b/.ua/index.json
index dffe5c2..e15295b 100644
--- a/.ua/index.json
+++ b/.ua/index.json
@@ -1,6 +1,6 @@
 {
   "$schema": "ui-arch-registry-index/0.1",
-  "generatedAt": "2026-10-23T09:06:10.925Z",
+  "generatedAt": "2026-10-23T09:08:47.698Z",
   "repoRoot": ".",
   "packages": [
     {
diff --git a/packages/skin/ui/src/select.ts b/packages/skin/ui/src/select.ts
index 15e0ef7..917ae31 100644
--- a/packages/skin/ui/src/select.ts
+++ b/packages/skin/ui/src/select.ts
@@ -1,7 +1,7 @@
 import { effect, h, signal } from '@ui-arch/frame';
 import type { SelectProps } from './types.js';
 
-/*** 下拉选择：自绘弹层替代原生 select，value 信号双向绑定；点选项 / 点外部 / Esc 关闭 ***/
+/*** 下拉选择：自绘弹层替代原生 select，value 信号双向绑定；支持 ↑↓/Home/End 键盘导航，点选项 / 点外部 / Esc 关闭 ***/
 export function select(props: SelectProps): HTMLElement {
   // —— 状态集中声明 ——
   const open = signal(false);              // 弹层开合
@@ -50,7 +50,18 @@ export function select(props: SelectProps): HTMLElement {
   const root = h('div', { class: () => `ua-select${open() ? ' ua-open' : ''}` }, trigger, pop); // 根带开合类，供箭头旋转
 
   root.addEventListener('keydown', (e: KeyboardEvent) => {
-    if (e.key === 'Escape') open(false); // Esc 关闭弹层
+    if (e.key === 'Escape') { open(false); trigger.focus(); return; } // Esc 关闭并回焦触发器
+    if (e.key === 'ArrowDown' || e.key === 'ArrowUp') {
+      e.preventDefault(); // 阻止页面滚动
+      if (!open()) { open(true); options[0]?.focus(); return; } // 未展开：展开并聚焦首个选项
+      const idx = options.indexOf(document.activeElement as HTMLElement); // 展开中：在选项间环形移动
+      const dir = e.key === 'ArrowDown' ? 1 : -1;
+      const next = (idx + dir + options.length) % options.length;
+      options[next]?.focus();
+      return;
+    }
+    if (e.key === 'Home' && open()) { e.preventDefault(); options[0]?.focus(); return; } // Home 跳首项
+    if (e.key === 'End' && open()) { e.preventDefault(); options[options.length - 1]?.focus(); } // End 跳末项
   });
   document.addEventListener('click', (e) => {
     if (root.contains(e.target as Node)) return; // 卫语句：组件内点击不处理