diff --git a/docs/zh_CN/atom/atomhub_switch.md b/docs/zh_CN/atom/atomhub_switch.md
index b2ba7f86..b749ee09 100644
--- a/docs/zh_CN/atom/atomhub_switch.md
+++ b/docs/zh_CN/atom/atomhub_switch.md
@@ -127,7 +127,7 @@
 
 <script>
 
-   var purchase_link = '';
+   var purchase_link = 'https://m5stack.com/products/atom-hub-switch-kit';
 
    anchor_search(purchase_link);
    scrollFunc();