diff --git a/data/category-ads b/data/category-ads
index 64e5cc9a..3f74c833 100644
--- a/data/category-ads
+++ b/data/category-ads
@@ -113,6 +113,9 @@ wwads.cn
 # 36Kr
 adx.36kr.com
 
+# 12306
+ad.12306.cn
+
 # AdHub
 hubcloud.com.cn