diff --git a/explore/index.yml b/explore/index.yml
index b084d9de55e0e782e857cdf55cb77268ecea126d..a24b848ae1377e2dd15160b0078956a59dc69354 100644
--- a/explore/index.yml
+++ b/explore/index.yml
@@ -1,6 +1,6 @@
 banner:
-- link: /courses/detail/1/l
-  url: https://codechina.csdn.net/codechina/operation-work/uploads/3d1c29bc9e4003473c6f746c075722cb/Git%E5%9F%BA%E7%A1%80%E5%85%A5%E9%97%A8.jpg
+- link: https://cccst.org.cn/subpage/osis?utm_source=codechina
+  url: https://codechina.csdn.net/codechina/operation-work/uploads/95d29efa9688e83fc57e81951998c03f/cccst.jpg
 groups:
 - csdn
 - oceanbase