diff --git a/app/components/CustomSearchDialog.tsx b/app/components/CustomSearchDialog.tsx
index c155a586..a004595f 100644
--- a/app/components/CustomSearchDialog.tsx
+++ b/app/components/CustomSearchDialog.tsx
@@ -1,6 +1,7 @@
 "use client";
 
-import { useEffect, useMemo, useState } from "react";
+import { useEffect, useMemo, useRef, useState } from "react";
+import { trackEvent } from "@/lib/analytics";
 import { useDocsSearch } from "fumadocs-core/search/client";
 import { useI18n } from "fumadocs-ui/provider";
 import {
@@ -57,7 +58,16 @@ export function CustomSearchDialog({
   const [tag, setTag] = useState(defaultTag);
 
   // Extract onOpenChange to use in dependency array cleanly
-  const { onOpenChange, ...otherProps } = props;
+  const { onOpenChange, open, ...otherProps } = props;
+
+  // 记录上次 open 状态，只在从关闭→打开时触发埋点，避免渲染抖动多次上报
+  const prevOpenRef = useRef<boolean | undefined>(undefined);
+  useEffect(() => {
+    if (open === true && prevOpenRef.current !== true) {
+      trackEvent("search_open", { path: window.location.pathname });
+    }
+    prevOpenRef.current = open;
+  }, [open]);
 
   const { search, setSearch, query } = useDocsSearch(
     type === "fetch"
@@ -82,7 +92,7 @@ export function CustomSearchDialog({
     if (!search) return;
 
     const timer = setTimeout(() => {
-            // Umami 埋点: 搜索结果点击
+      // Umami 埋点: 搜索词输入（debounce 1s，非搜索结果点击）
       if (window.umami) {
         window.umami.track("search_query", { query: search });
       }
@@ -103,36 +113,37 @@ export function CustomSearchDialog({
 
   // 使用 useMemo 劫持 search items，注入埋点逻辑
   const trackedItems = useMemo(() => {
-    const data = query.data !== "empty" && query.data ? query.data : defaultItems;
+    const data =
+      query.data !== "empty" && query.data ? query.data : defaultItems;
     if (!data) return [];
 
     return data.map((item: unknown, index: number) => {
-        const searchItem = item as SearchItem;
-        return {
-          ...searchItem,
-          onSelect: (value: string) => {
-            // Umami 埋点: 搜索结果点击
-            if (window.umami) {
-              window.umami.track("search_result_click", {
-                query: search,
-                rank: index + 1,
-                url: searchItem.url,
-              });
-            }
-
-            // Call original onSelect if it exists
-            if (searchItem.onSelect) searchItem.onSelect(value);
-
-            // Handle navigation if URL exists
-            if (searchItem.url) {
-                // 显式执行路由跳转和关闭弹窗，确保点击行为能够同时触发埋点和导航
-                router.push(searchItem.url);
-                if (onOpenChange) {
-                    onOpenChange(false);
-                }
+      const searchItem = item as SearchItem;
+      return {
+        ...searchItem,
+        onSelect: (value: string) => {
+          // Umami 埋点: 搜索结果点击
+          if (window.umami) {
+            window.umami.track("search_result_click", {
+              query: search,
+              rank: index + 1,
+              url: searchItem.url,
+            });
+          }
+
+          // Call original onSelect if it exists
+          if (searchItem.onSelect) searchItem.onSelect(value);
+
+          // Handle navigation if URL exists
+          if (searchItem.url) {
+            // 显式执行路由跳转和关闭弹窗，确保点击行为能够同时触发埋点和导航
+            router.push(searchItem.url);
+            if (onOpenChange) {
+              onOpenChange(false);
             }
-          },
-        };
+          }
+        },
+      };
     });
   }, [query.data, defaultItems, search, router, onOpenChange]);
 
@@ -142,6 +153,7 @@ export function CustomSearchDialog({
       onSearchChange={setSearch}
       isLoading={query.isLoading}
       onOpenChange={onOpenChange}
+      open={open}
       {...otherProps}
     >
       <SearchDialogOverlay />
diff --git a/app/components/DocShareButton.tsx b/app/components/DocShareButton.tsx
new file mode 100644
index 00000000..f71fdeaa
--- /dev/null
+++ b/app/components/DocShareButton.tsx
@@ -0,0 +1,61 @@
+"use client";
+
+import { useEffect, useRef, useState } from "react";
+import { trackEvent } from "@/lib/analytics";
+
+/**
+ * 文档页"复制链接"按钮。
+ * 点击后将当前页 URL 写入剪贴板，同时触发 doc_share 埋点。
+ */
+export function DocShareButton() {
+  const [copied, setCopied] = useState(false);
+  // timer ref：每次新点击 / 组件卸载时清掉旧 timer，避免 setState on unmounted
+  const resetTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null);
+
+  useEffect(() => {
+    return () => {
+      if (resetTimerRef.current) clearTimeout(resetTimerRef.current);
+    };
+  }, []);
+
+  const handleCopy = async () => {
+    const url = window.location.href;
+    try {
+      await navigator.clipboard.writeText(url);
+      setCopied(true);
+      // 旧 timer 先清掉，避免连点两次后提前恢复文案
+      if (resetTimerRef.current) clearTimeout(resetTimerRef.current);
+      resetTimerRef.current = setTimeout(() => setCopied(false), 2000);
+    } catch {
+      // clipboard 不可用时静默失败
+    }
+
+    // 埋点在复制动作发生后立即上报，不依赖 clipboard 是否成功
+    trackEvent("doc_share", { path: window.location.pathname, url });
+  };
+
+  return (
+    <button
+      type="button"
+      onClick={handleCopy}
+      className="inline-flex items-center gap-2 rounded-md px-4 h-11 text-base font-medium hover:bg-muted/80 hover:text-foreground"
+      aria-label="复制页面链接"
+    >
+      <svg
+        aria-hidden="true"
+        className="h-5 w-5"
+        viewBox="0 0 24 24"
+        fill="none"
+        stroke="currentColor"
+        strokeWidth={1.8}
+        strokeLinecap="round"
+        strokeLinejoin="round"
+      >
+        {/* link 图标 */}
+        <path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71" />
+        <path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71" />
+      </svg>
+      {copied ? "已复制" : "复制链接"}
+    </button>
+  );
+}
diff --git a/app/components/DocsPageViewTracker.tsx b/app/components/DocsPageViewTracker.tsx
index 32c9b119..eeb2a065 100644
--- a/app/components/DocsPageViewTracker.tsx
+++ b/app/components/DocsPageViewTracker.tsx
@@ -1,59 +1,44 @@
 "use client";
 
+import { useEffect, useRef } from "react";
 import { usePathname } from "next/navigation";
-import { useEffect } from "react";
+import { trackEvent } from "@/lib/analytics";
 
 /**
- * 文档页面访问埋点组件。
- *
- * 放在 app/docs/layout.tsx 下，pathname 变化时向自家 /api/analytics 上报一次 page_view，
- * 供将来基于 AnalyticsEvent 表做文档热度分析（当前 A-2 功能的热榜是用 GA4 数据，此处并行积累自家数据）。
- *
- * 去重策略：同一浏览器会话内同一 path 只报一次（sessionStorage key = "pv_reported:<path>"）。
- * 为什么用 sessionStorage 不用 localStorage：关闭标签页后应当算新会话，否则长期复访的用户会被严重低估。
- *
- * 无返回 UI（return null），仅作副作用组件使用。
+ * 文档页 PV 埋点组件。
+ * 挂载在 docs layout 下，监听路由变化上报 page_view 事件。
+ * 用 sessionStorage 去重：同一 session 内同一路径只上报一次。
  */
 export function DocsPageViewTracker() {
   const pathname = usePathname();
+  // 记录上次上报的路径，避免 StrictMode 下双渲染重复发送
+  const lastTrackedRef = useRef<string | null>(null);
 
   useEffect(() => {
     if (!pathname) return;
 
-    // 同会话同 path 已上报则跳过，避免刷新/快速切换重复计数。
-    // sessionStorage / localStorage 在 Safari 隐私模式、存储禁用、配额超限时会抛错，
-    // 埋点组件要绝对静默，全部包 try/catch 后降级到"继续上报但不去重"即可。
-    const key = `pv_reported:${pathname}`;
+    const dedupeKey = `pv:${pathname}`;
+    // sessionStorage 可能因为存储禁用 / 配额超限 / Safari 隐私模式抛错；
+    // 埋点的去重不能因此报错破坏导航，用 try/catch 降级到内存去重
     try {
-      if (sessionStorage.getItem(key)) return;
-      sessionStorage.setItem(key, "1");
+      if (sessionStorage.getItem(dedupeKey)) return;
     } catch {
-      // storage 不可用，跳过去重继续上报
+      // 读失败时跳过 session 去重，后面的内存去重仍然生效
     }
+    // 内存去重：防止 React StrictMode 双重 effect 重复调用
+    if (lastTrackedRef.current === pathname) return;
 
-    // 如果用户登录了，带上 Sa-Token 让后端能把事件关联到 userId；匿名用户后端会写入 userId=null
-    let token: string | null = null;
-    if (typeof window !== "undefined") {
-      try {
-        token = localStorage.getItem("satoken");
-      } catch {
-        token = null;
-      }
+    lastTrackedRef.current = pathname;
+    try {
+      sessionStorage.setItem(dedupeKey, "1");
+    } catch {
+      // 写失败时下一个 session / 刷新会再报一次，可接受
     }
-    const headers: Record<string, string> = {
-      "Content-Type": "application/json",
-    };
-    if (token) headers["x-satoken"] = token;
 
-    // 埋点失败静默吞掉：不能因为分析接口挂了影响文档页的正常阅读体验
-    fetch("/api/analytics", {
-      method: "POST",
-      headers,
-      body: JSON.stringify({
-        eventType: "page_view",
-        eventData: { path: pathname, title: document.title },
-      }),
-    }).catch(() => {});
+    trackEvent("page_view", {
+      path: pathname,
+      title: document.title,
+    });
   }, [pathname]);
 
   return null;
diff --git a/app/docs/[...slug]/page.tsx b/app/docs/[...slug]/page.tsx
index f79a3e4c..019b3e1c 100644
--- a/app/docs/[...slug]/page.tsx
+++ b/app/docs/[...slug]/page.tsx
@@ -15,6 +15,7 @@ import { DocsAssistant } from "@/app/components/DocsAssistant";
 import { LicenseNotice } from "@/app/components/LicenseNotice";
 import { PageFeedback } from "@/app/components/PageFeedback";
 import { DocHistoryPanel } from "@/app/components/DocHistoryPanel";
+import { DocShareButton } from "@/app/components/DocShareButton";
 // Extract clean text content from MDX - no longer used on client/page side
 // content fetching moved to API route for performance
 
@@ -53,7 +54,10 @@ export default async function DocPage({ params }: Param) {
             <h1 className="text-3xl font-extrabold tracking-tight md:text-4xl">
               {page.data.title}
             </h1>
-            <EditOnGithub href={editUrl} />
+            <div className="flex items-center gap-2">
+              <DocShareButton />
+              <EditOnGithub href={editUrl} />
+            </div>
           </div>
           <Mdx components={getMDXComponents()} />
           <Contributors entry={contributorsEntry} />
diff --git a/app/docs/layout.tsx b/app/docs/layout.tsx
index 51fb33d7..d9ad7fd2 100644
--- a/app/docs/layout.tsx
+++ b/app/docs/layout.tsx
@@ -71,6 +71,7 @@ export default async function Layout({ children }: { children: ReactNode }) {
     <>
       {/* Add a class on <html> while in docs to adjust global backgrounds */}
       <CopyTracking />
+      <DocsPageViewTracker />
       <DocsRouteFlag />
       <DocsPageViewTracker />
       <DocsLayout
diff --git a/lib/analytics.ts b/lib/analytics.ts
new file mode 100644
index 00000000..eb198bc3
--- /dev/null
+++ b/lib/analytics.ts
@@ -0,0 +1,59 @@
+"use client";
+
+import { useCallback } from "react";
+
+// 从 localStorage 安全读取 satoken。SSR 环境 / storage 禁用（Safari 隐私模式）均返回 null
+function getStoredToken(): string | null {
+  if (typeof window === "undefined") return null;
+  try {
+    return localStorage.getItem("satoken");
+  } catch {
+    return null;
+  }
+}
+
+/**
+ * 向 Next.js 内置 /api/analytics 发送埋点事件。
+ * 失败静默，不抛异常，不影响用户主流程。
+ *
+ * Header 命名注意：/api/analytics 的 resolveUserId 从 `x-satoken` 读取 token（见 lib/server-auth.ts），
+ * 然后在内部再以 `satoken` header 转发给后端 /auth/me 验证。所以客户端 → Next 这一跳必须用 `x-satoken`，
+ * 否则 userId 永远解析不到，埋点记录的 uniqueUsers 会恒为 0。
+ */
+export async function trackEvent(
+  eventType: string,
+  eventData?: Record<string, unknown>,
+): Promise<void> {
+  try {
+    const token = getStoredToken();
+    // 用 Record<string, string> 而不是 HeadersInit（联合类型），保证可变 + 类型安全
+    const headers: Record<string, string> = {
+      "Content-Type": "application/json",
+    };
+    // 客户端 → Next 路由必须用 x-satoken（见上方注释）
+    if (token) {
+      headers["x-satoken"] = token;
+    }
+
+    await fetch("/api/analytics", {
+      method: "POST",
+      headers,
+      body: JSON.stringify({ eventType, eventData: eventData ?? {} }),
+    });
+  } catch {
+    // 埋点失败不影响用户操作，静默丢弃
+  }
+}
+
+/**
+ * 在客户端组件中使用的埋点 hook。
+ * 返回 memoized 的 trackEvent，避免每次渲染都新建引用。
+ */
+export function useAnalytics() {
+  const track = useCallback(
+    (eventType: string, eventData?: Record<string, unknown>) =>
+      trackEvent(eventType, eventData),
+    [],
+  );
+  return { trackEvent: track };
+}