diff --git a/accelerated-domains.china.conf b/accelerated-domains.china.conf
index 3cc703eb4c..4de541ce7b 100644
--- a/accelerated-domains.china.conf
+++ b/accelerated-domains.china.conf
@@ -9039,7 +9039,6 @@ server=/aicdn.com/114.114.114.114
 server=/aicdn2.com/114.114.114.114
 server=/aicdn4.com/114.114.114.114
 server=/aichaicp.com/114.114.114.114
-server=/aichao521.com/114.114.114.114
 server=/aichaoxing.com/114.114.114.114
 server=/aichatu.com/114.114.114.114
 server=/aichawu.com/114.114.114.114