diff --git a/app/components/Contribute.tsx b/app/components/Contribute.tsx
index 02254b4..f104e39 100644
--- a/app/components/Contribute.tsx
+++ b/app/components/Contribute.tsx
@@ -19,17 +19,13 @@ import styles from "./Contribute.module.css";
 import { TreeSelect } from "antd";
 import type { DefaultOptionType } from "antd/es/select";
 import { DataNode } from "antd/es/tree";
-
-const REPO_OWNER = "InvolutionHell";
-const REPO_NAME = "involutionhell.github.io";
-const DEFAULT_BRANCH = "main";
-const DOCS_BASE = "app/docs";
+import { buildDocsNewUrl } from "@/lib/github";
 
 type DirNode = { name: string; path: string; children?: DirNode[] };
 
+// 统一调用工具函数生成 GitHub 新建链接，路径规则与 Edit 按钮一致
 function buildGithubNewUrl(dirPath: string, filename: string, title: string) {
   const file = filename.endsWith(".mdx") ? filename : `${filename}.mdx`;
-  const fullDir = `${DOCS_BASE}/${dirPath}`.replace(/\/+/g, "/");
   const frontMatter = `---
 title: ${title || "New Article"}
 description:
@@ -42,7 +38,7 @@ tags: []
 Write your content here.
 `;
   const params = new URLSearchParams({ filename: file, value: frontMatter });
-  return `https://github.com/${REPO_OWNER}/${REPO_NAME}/new/${DEFAULT_BRANCH}/${encodeURIComponent(fullDir)}?${params.toString()}`;
+  return buildDocsNewUrl(dirPath, params);
 }
 
 // ✅ 用纯文本 label + 一级节点 selectable:false
diff --git a/app/components/EditOnGithub.tsx b/app/components/EditOnGithub.tsx
new file mode 100644
index 0000000..2e2ec0d
--- /dev/null
+++ b/app/components/EditOnGithub.tsx
@@ -0,0 +1,25 @@
+import Link from "next/link";
+
+// 复用的编辑链接按钮，统一封装图标与样式
+interface EditOnGithubProps {
+  href: string;
+}
+
+export function EditOnGithub({ href }: EditOnGithubProps) {
+  return (
+    <Link
+      href={href}
+      target="_blank"
+      rel="noopener noreferrer"
+      className="inline-flex items-center justify-center rounded-md border border-transparent w-9 h-9 text-muted-foreground transition-colors hover:bg-muted/80 hover:text-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2"
+      aria-label="Edit on GitHub"
+    >
+      <span
+        aria-hidden
+        className="material-symbols-outlined text-lg flex items-center justify-center"
+      >
+        edit
+      </span>
+    </Link>
+  );
+}
diff --git a/app/docs/[...slug]/page.tsx b/app/docs/[...slug]/page.tsx
index a71654f..a415990 100644
--- a/app/docs/[...slug]/page.tsx
+++ b/app/docs/[...slug]/page.tsx
@@ -4,7 +4,8 @@ import { notFound } from "next/navigation";
 import type { Metadata } from "next";
 import { getMDXComponents } from "@/mdx-components";
 import { GiscusComments } from "@/app/components/GiscusComments";
-import { getContributors } from "@/lib/github";
+import { EditOnGithub } from "@/app/components/EditOnGithub";
+import { buildDocsEditUrl, getContributors } from "@/lib/github";
 import { Contributors } from "@/app/components/Contributors";
 
 interface Param {
@@ -21,25 +22,26 @@ export default async function DocPage({ params }: Param) {
     notFound();
   }
 
+  // 统一通过工具函数生成 Edit 链接，内部已处理中文目录编码
+  const editUrl = buildDocsEditUrl(page.path);
   // Get file path for contributors
   const filePath = "app/docs/" + page.file.path;
-
   // Fetch contributors data on server side
   const contributors = await getContributors(filePath);
-
   const Mdx = page.data.body;
 
   return (
     <DocsPage toc={page.data.toc}>
       <DocsBody>
-        <h1 className="mb-4 text-3xl font-extrabold tracking-tight md:text-4xl">
-          {page.data.title}
-        </h1>
+        <div className="mb-6 flex flex-col gap-3 border-b border-border pb-6 md:mb-8 md:flex-row md:items-center md:justify-between">
+          <h1 className="text-3xl font-extrabold tracking-tight md:text-4xl">
+            {page.data.title}
+          </h1>
+          <EditOnGithub href={editUrl} />
+        </div>
         <Mdx components={getMDXComponents()} />
+        <GiscusComments className="mt-16" />
         <Contributors contributors={contributors} />
-        <section className="mt-16">
-          <GiscusComments />
-        </section>
       </DocsBody>
     </DocsPage>
   );
diff --git a/app/layout.tsx b/app/layout.tsx
index c609f04..0bc4091 100644
--- a/app/layout.tsx
+++ b/app/layout.tsx
@@ -31,6 +31,11 @@ export default function RootLayout({
     <html lang="en" suppressHydrationWarning>
       <head>
         <link rel="preload" href="/mascot.webp" as="image" type="image/webp" />
+        {/* 谷歌图标字体用于 Edit 按钮的 material symbol */}
+        <link
+          rel="stylesheet"
+          href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@20..48,100..700,0..1,-50..200&icon_names=edit"
+        />
       </head>
       <body
         suppressHydrationWarning
diff --git a/lib/github.ts b/lib/github.ts
index bb248ec..f6342b8 100644
--- a/lib/github.ts
+++ b/lib/github.ts
@@ -1,5 +1,63 @@
 import { cache } from "react";
 
+// GitHub 相关工具方法：集中维护仓库常量与文档路径生成逻辑
+const GITHUB_OWNER = "InvolutionHell";
+const GITHUB_REPO = "involutionhell.github.io";
+const DEFAULT_BRANCH = "main";
+const DOCS_BASE = "app/docs";
+
+const REPO_BASE_URL = `https://github.com/${GITHUB_OWNER}/${GITHUB_REPO}`;
+
+// 拼接路径并清理多余斜杠，避免出现 // 或首尾斜杠
+function joinPath(...segments: (string | undefined)[]) {
+  return segments
+    .filter((segment) => (segment ?? "").trim().length > 0)
+    .join("/")
+    .replace(/\/+/g, "/")
+    .replace(/^\/+/, "")
+    .replace(/\/+$/, "");
+}
+
+// 将路径逐段 URL 编码，处理中文等特殊字符
+function encodeRepoPath(...segments: (string | undefined)[]) {
+  const joined = joinPath(...segments);
+  if (!joined) return "";
+  return joined
+    .split("/")
+    .map((segment) => encodeURIComponent(segment))
+    .join("/");
+}
+
+// 构建文档的 GitHub 编辑链接
+export function buildDocsEditUrl(relativeDocPath: string) {
+  const encoded = encodeRepoPath(DOCS_BASE, relativeDocPath);
+  return `${REPO_BASE_URL}/edit/${DEFAULT_BRANCH}/${encoded}`;
+}
+
+// 构建在 GitHub 新建文档的链接，附带 frontmatter 参数
+export function buildDocsNewUrl(relativeDir: string, params: URLSearchParams) {
+  const encodedDir = encodeRepoPath(DOCS_BASE, relativeDir);
+  const query = params.toString();
+  const suffix = query ? `?${query}` : "";
+  return `${REPO_BASE_URL}/new/${DEFAULT_BRANCH}/${encodedDir}${suffix}`;
+}
+
+// 帮助预览完整 docs 路径（未编码）
+export function normalizeDocsPath(relative: string) {
+  return joinPath(DOCS_BASE, relative);
+}
+
+// 暴露常量给其他场景复用
+export const githubConstants = {
+  owner: GITHUB_OWNER,
+  repo: GITHUB_REPO,
+  defaultBranch: DEFAULT_BRANCH,
+  docsBase: DOCS_BASE,
+  repoBaseUrl: REPO_BASE_URL,
+};
+
+
+
 // Define contributor data structure
 interface Contributor {
   login: string;