diff --git a/backend/app/service/website.go b/backend/app/service/website.go
index f2aa84a7a..4804cab16 100644
--- a/backend/app/service/website.go
+++ b/backend/app/service/website.go
@@ -427,7 +427,9 @@ func (w WebsiteService) UpdateWebsite(req request.WebsiteUpdate) error {
 		}
 	}
 	website.PrimaryDomain = req.PrimaryDomain
-	website.WebsiteGroupID = req.WebsiteGroupID
+	if req.WebsiteGroupID > 0 {
+		website.WebsiteGroupID = req.WebsiteGroupID
+	}
 	website.Remark = req.Remark
 	website.IPV6 = req.IPV6