diff --git a/api/models/model.py b/api/models/model.py
index a6f517ea6b..5afaf60b28 100644
--- a/api/models/model.py
+++ b/api/models/model.py
@@ -1116,7 +1116,7 @@ class Site(db.Model):
     @property
     def app_base_url(self):
         return (
-            dify_config.APP_WEB_URL if  dify_config.APP_WEB_URL else request.host_url.rstrip('/'))
+            dify_config.APP_WEB_URL if  dify_config.APP_WEB_URL else request.url_root.rstrip('/'))
 
 
 class ApiToken(db.Model):