diff --git a/src/pages/api/posts.json.js b/src/pages/api/posts.json.js
new file mode 100644
index 0000000..c7e8e44
--- /dev/null
+++ b/src/pages/api/posts.json.js
@@ -0,0 +1,14 @@
+import { getAllPosts } from '@/lib/posts';
+
+export function GET() {
+  const posts = getAllPosts().map((post) => ({
+    title: post.title,
+    href: post.href,
+  }));
+
+  return new Response(JSON.stringify(posts), {
+    headers: {
+      'content-type': 'application/json; charset=utf-8',
+    },
+  });
+}
diff --git a/static/js/random.js b/static/js/random.js
index 6989557..481ee1a 100644
--- a/static/js/random.js
+++ b/static/js/random.js
@@ -1,13 +1,22 @@
 function randomPost() {
-    fetch('/sitemap.xml').then(res => res.text()).then(str => (new window.DOMParser()).parseFromString(str, "text/xml")).then(data => {
-        let ls = data.querySelectorAll('url loc');
-        let locationHref,locSplit;
-        do {
-            locationHref = ls[Math.floor(Math.random() * ls.length)].innerHTML
-            locSplit = locationHref.split('/')[3] || ''
-        } while (locSplit !== 'posts');
-        //若所有文章都如 https://…….com/posts/2022/07/…… 格式，主域名后字符是 posts，则循环条件改为：
-        //while (locSplit !== 'posts');
-        location.href = locationHref
-    })
-}
\ No newline at end of file
+    fetch('/api/posts.json')
+        .then(res => {
+            if (!res.ok) throw new Error(`Failed to load posts: ${res.status}`);
+            return res.json();
+        })
+        .then(posts => {
+            const postLinks = posts
+                .map(post => post && post.href)
+                .filter(href => typeof href === 'string' && href.startsWith('/posts/'));
+
+            if (postLinks.length === 0) {
+                console.warn('No posts available for random navigation.');
+                return;
+            }
+
+            location.href = postLinks[Math.floor(Math.random() * postLinks.length)];
+        })
+        .catch(error => {
+            console.error('Random post navigation failed:', error);
+        });
+}