diff --git a/src/components/Footer.astro b/src/components/Footer.astro
index e4f4ca6..9cd365e 100644
--- a/src/components/Footer.astro
+++ b/src/components/Footer.astro
@@ -25,6 +25,9 @@ const footerLinks = [
     <p style="font-size: 12px; color: #64748b; text-align: center;">
       © {currentYear} 知习 (ZhiXi AI). Structured learning for the digital age.
     </p>
+    <p style="font-size: 12px; color: #94a3b8; text-align: center; margin-top: 8px;">
+      <a href="https://beian.miit.gov.cn/" target="_blank" rel="noopener noreferrer" style="color: #94a3b8; text-decoration: none;">冀ICP备2026016484号</a>
+    </p>
   </div>
 </footer>