diff --git a/IRaCIS.Core.API/appsettings.Prod_Event_IRC.json b/IRaCIS.Core.API/appsettings.Prod_Event_IRC.json
index 1e90a671c..9237cd07b 100644
--- a/IRaCIS.Core.API/appsettings.Prod_Event_IRC.json
+++ b/IRaCIS.Core.API/appsettings.Prod_Event_IRC.json
@@ -96,7 +96,7 @@
     "FromEmail": "irc@extimaging.com",
     "FromName": "EIC Imaging System",
     "AuthorizationCode": "ExtImg@2022",
-    "SiteUrl": "http://irc.extimaging.com/login",
+    "SiteUrl": "http://irc.event.extimaging.com/login",
 
     "PlatformName": "EICS",
     "PlatformNameCN": "展影云平台",