diff --git a/apps/jumpserver/settings/base.py b/apps/jumpserver/settings/base.py
index fc3ba19ad..4a89e4234 100644
--- a/apps/jumpserver/settings/base.py
+++ b/apps/jumpserver/settings/base.py
@@ -76,12 +76,10 @@ ALLOWED_DOMAINS = [host.split('/')[0] for host in ALLOWED_DOMAINS if host]
 DEBUG_HOSTS = ['127.0.0.1', 'localhost']
 DEBUG_PORT = ['8080', '80', '443', '4200', '9528']
 if DEBUG:
-    for host in DEBUG_HOSTS:
-        for port in DEBUG_PORT:
-            ALLOWED_DOMAINS.append('{}:{}'.format(host, port))
+    DEBUG_HOST_PORTS = ['{}:{}'.format(host, port) for host in DEBUG_HOSTS for port in DEBUG_PORT]
+    ALLOWED_DOMAINS.extend(DEBUG_HOST_PORTS)
 
 ALLOWED_HOSTS = list(set(['.' + host.split(':')[0] for host in ALLOWED_DOMAINS]))
-
 print("ALLOWED_HOSTS: ", ALLOWED_HOSTS)
 
 # https://docs.djangoproject.com/en/4.1/ref/settings/#std-setting-CSRF_TRUSTED_ORIGINS