diff --git a/AdRemovalListForUnusualAds.txt b/AdRemovalListForUnusualAds.txt
index ce718c445..4329c8405 100644
--- a/AdRemovalListForUnusualAds.txt
+++ b/AdRemovalListForUnusualAds.txt
@@ -59,6 +59,7 @@ artstation.com#?#projects-list-item:-abp-contains(/video slot/i)
 bababus.com##.guide_wx
 bestwehotel.com##.member-type-footer
 booking.huazhu.com##.Lflr.m_top_right
+csair.com##.qrcode
 ctrip.com##.set-wechat.set-list > .nav-myctrip.person-text
 ctrip.com##.wechat_code.footer-item
 flights.ctrip.com##.fVfIeY.guaranteeStyle__GuaranteeQR-ihMQSD