diff --git a/.github/workflows/sync-qq-groups.yml b/.github/workflows/sync-qq-groups.yml
new file mode 100644
index 0000000..689bc66
--- /dev/null
+++ b/.github/workflows/sync-qq-groups.yml
@@ -0,0 +1,49 @@
+name: Sync QQ Groups
+
+on:
+  repository_dispatch:
+    types: [sync-qq-groups]
+  workflow_dispatch:
+
+permissions:
+  contents: write
+
+jobs:
+  sync:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          token: ${{ secrets.PAT_TOKEN }}
+          show-progress: false
+
+      - name: Fetch index.json and update README
+        run: |
+          DATA=$(curl -sf https://end.maafw.com/index.json) || exit 0
+
+          USER_GROUP=$(echo "$DATA" | jq -r '.qq_groups.user.number // empty')
+          USER_LINK=$(echo "$DATA" | jq -r '.qq_groups.user.link // empty')
+          DEV_GROUP=$(echo "$DATA" | jq -r '.qq_groups.dev.number // empty')
+          DEV_LINK=$(echo "$DATA" | jq -r '.qq_groups.dev.link // empty')
+
+          if [ -z "$USER_GROUP" ] || [ -z "$USER_LINK" ] || [ -z "$DEV_GROUP" ] || [ -z "$DEV_LINK" ]; then
+            echo "Missing fields in index.json, skipping"
+            exit 0
+          fi
+
+          sed -i "s|\[用户 QQ 群\](https://qm.qq.com/q/[^)]*): [0-9]*|[用户 QQ 群]($USER_LINK): $USER_GROUP|" README.md
+          sed -i "s|\[开发 QQ 群\](https://qm.qq.com/q/[^)]*): [0-9]*|[开发 QQ 群]($DEV_LINK): $DEV_GROUP|" README.md
+
+      - name: Check for changes
+        id: diff
+        run: |
+          git diff --quiet && echo "changed=false" >> "$GITHUB_OUTPUT" || echo "changed=true" >> "$GITHUB_OUTPUT"
+
+      - name: Commit and push
+        if: steps.diff.outputs.changed == 'true'
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add README.md
+          git commit -m "chore: sync QQ group info in README"
+          git push
diff --git a/app/components/Footer.tsx b/app/components/Footer.tsx
index 7b0d82f..2ba1aff 100644
--- a/app/components/Footer.tsx
+++ b/app/components/Footer.tsx
@@ -3,10 +3,12 @@
 import { motion } from "framer-motion";
 import { useTranslation } from "react-i18next";
 import Image from "next/image";
-import { FRIEND_LINKS, GITHUB_URLS, QQ_GROUPS } from "../constants";
+import { FRIEND_LINKS, GITHUB_URLS } from "../constants";
+import { useQQGroups } from "../hooks/useQQGroups";
 
 export default function Footer() {
   const { t } = useTranslation();
+  const qqGroups = useQQGroups();
 
   // 性能优化：使用固定速度，移除滚动速度检测
   const marqueeDuration = 200;
@@ -51,22 +53,22 @@ export default function Footer() {
           <ul className="space-y-2 text-sm text-black/80 dark:text-white/70">
             <li>
               <a
-                href={QQ_GROUPS.USER_GROUP_LINK}
+                href={qqGroups.user.link}
                 target="_blank"
                 rel="noopener noreferrer"
                 className="transition-colors hover:text-[#c49102] dark:hover:text-[#FFE600]"
               >
-                {t("footer.userGroup")}: {QQ_GROUPS.USER_GROUP}
+                {t("footer.userGroup")}: {qqGroups.user.number}
               </a>
             </li>
             <li>
               <a
-                href={QQ_GROUPS.DEV_GROUP_LINK}
+                href={qqGroups.dev.link}
                 target="_blank"
                 rel="noopener noreferrer"
                 className="transition-colors hover:text-[#c49102] dark:hover:text-[#FFE600]"
               >
-                {t("footer.devGroup")}: {QQ_GROUPS.DEV_GROUP}
+                {t("footer.devGroup")}: {qqGroups.dev.number}
               </a>
             </li>
           </ul>
diff --git a/app/components/Header.tsx b/app/components/Header.tsx
index 2fe8138..2e75cc5 100644
--- a/app/components/Header.tsx
+++ b/app/components/Header.tsx
@@ -7,10 +7,12 @@ import { Book, Languages, Users } from "lucide-react";
 import { Button } from "./ui/Button";
 import { useTranslation } from "react-i18next";
 import { ThemeToggle } from "./ThemeToggle";
-import { GITHUB_URLS, QQ_GROUPS } from "../constants";
+import { GITHUB_URLS } from "../constants";
+import { useQQGroups } from "../hooks/useQQGroups";
 
 export default function Header() {
   const { t, i18n } = useTranslation();
+  const qqGroups = useQQGroups();
 
   const toggleLanguage = () => {
     const newLang = i18n.language === "zh" ? "en" : "zh";
@@ -52,7 +54,7 @@ export default function Header() {
             <Book size={16} /> {t("header.docs")}
           </Link>
           <Link
-            href={QQ_GROUPS.USER_GROUP_LINK}
+            href={qqGroups.user.link}
             target="_blank"
             rel="noopener noreferrer"
             className="flex items-center gap-2 font-mono text-sm text-black/80 transition-colors hover:text-[#c49102] dark:text-white/80 dark:hover:text-[#FFE600]"
diff --git a/app/hooks/useQQGroups.ts b/app/hooks/useQQGroups.ts
new file mode 100644
index 0000000..5a865c4
--- /dev/null
+++ b/app/hooks/useQQGroups.ts
@@ -0,0 +1,78 @@
+import { useCallback, useEffect, useState } from "react";
+import { QQ_GROUPS } from "../constants";
+
+interface QQGroup {
+  number: string;
+  link: string;
+}
+
+interface QQGroups {
+  user: QQGroup;
+  dev: QQGroup;
+}
+
+const CACHE_KEY = "maaend-qq-groups";
+const CACHE_TTL = 1000 * 60 * 60; // 1 hour
+
+const fallback: QQGroups = {
+  user: { number: QQ_GROUPS.USER_GROUP, link: QQ_GROUPS.USER_GROUP_LINK },
+  dev: { number: QQ_GROUPS.DEV_GROUP, link: QQ_GROUPS.DEV_GROUP_LINK },
+};
+
+function readCache(): QQGroups | null {
+  try {
+    const raw = localStorage.getItem(CACHE_KEY);
+    if (!raw) return null;
+    const { data, ts } = JSON.parse(raw);
+    if (Date.now() - ts > CACHE_TTL) return null;
+    return data;
+  } catch {
+    return null;
+  }
+}
+
+function writeCache(data: QQGroups) {
+  try {
+    localStorage.setItem(CACHE_KEY, JSON.stringify({ data, ts: Date.now() }));
+  } catch {
+    // storage full or unavailable
+  }
+}
+
+export function useQQGroups() {
+  const [groups, setGroups] = useState<QQGroups>(fallback);
+
+  const fetchGroups = useCallback(async () => {
+    const cached = readCache();
+    if (cached) {
+      setGroups(cached);
+      return;
+    }
+    try {
+      const res = await fetch("https://end.maafw.com/index.json");
+      if (!res.ok) return;
+      const data = await res.json();
+      const qq = data.qq_groups;
+      if (
+        qq?.user?.number &&
+        qq?.user?.link &&
+        qq?.dev?.number &&
+        qq?.dev?.link
+      ) {
+        const result: QQGroups = { user: qq.user, dev: qq.dev };
+        setGroups(result);
+        writeCache(result);
+      }
+    } catch {
+      // fallback to constants
+    }
+  }, []);
+
+  useEffect(() => {
+    (async () => {
+      await fetchGroups();
+    })();
+  }, [fetchGroups]);
+
+  return groups;
+}