diff --git a/_layouts/default.html b/_layouts/default.html
index 60b9db034d..41a0c383c1 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -4,7 +4,15 @@
   {% include head.html %}
 
   <body>
-
+<!--[D] 상단 수평 gnb위에 -->
+<div class="google-center-ad" style=" text-align: center;">
+    <script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
+    <!-- 상단 수평 -->
+    <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-4877378276818686" data-ad-slot="4462377009" data-ad-format="horizontal" data-full-width-responsive="true"></ins>
+    <script>
+        (adsbygoogle = window.adsbygoogle || []).push({});
+    </script>
+</div>
     {% include header.html %}
  
  <!--[D] 상단 수평 gnb위에 -->
