diff --git a/apps/assets/const/protocol.py b/apps/assets/const/protocol.py
index e66dde209..ecb173f86 100644
--- a/apps/assets/const/protocol.py
+++ b/apps/assets/const/protocol.py
@@ -62,11 +62,12 @@ class Protocol(ChoicesMixin, models.TextChoices):
                         'label': _('Security'),
                         'help_text': _("Security layer to use for the connection")
                     },
-                    # 'ad_domain': {
-                    #     'type': 'str',
-                    #     "required": False,
-                    #     'label': _('AD domain')
-                    # }
+                    'ad_domain': {
+                        'type': 'str',
+                        'required': False,
+                        'default': '',
+                        'label': _('AD domain')
+                    }
                 }
             },
             cls.vnc: {
diff --git a/apps/assets/const/types.py b/apps/assets/const/types.py
index 1f0156b7f..e9c3ae790 100644
--- a/apps/assets/const/types.py
+++ b/apps/assets/const/types.py
@@ -350,7 +350,7 @@ class AllTypes(ChoicesMixin):
 
                 for d in platform_datas:
                     name = d['name']
-                    # print("\t    - Platform: {}".format(name))
+                    print("\t    - Platform: {}".format(name))
                     _automation = d.pop('automation', {})
                     _protocols = d.pop('_protocols', [])
                     _protocols_setting = d.pop('protocols_setting', {})
@@ -363,7 +363,7 @@ class AllTypes(ChoicesMixin):
                         setting = _protocols_setting.get(p['name'], {})
                         p['required'] = setting.pop('required', False)
                         p['default'] = setting.pop('default', False)
-                        p['setting'] = {**p.get('setting', {}), **setting}
+                        p['setting'] = {**p.get('setting', {}).get('default', ''), **setting}
 
                     platform_data = {
                         **default_platform_data, **d,
diff --git a/apps/common/serializers/dynamic.py b/apps/common/serializers/dynamic.py
index 49e1e062d..e3fab256a 100644
--- a/apps/common/serializers/dynamic.py
+++ b/apps/common/serializers/dynamic.py
@@ -51,8 +51,8 @@ def create_serializer_class(serializer_name, fields_info):
         field_type = data.pop('type', 'str')
 
         # 用户定义 default 和 required 可能会冲突, 所以要处理一下
-        default = data.get('default', '')
-        if default not in ['', None]:
+        default = data.get('default', None)
+        if default is not None:
             data['required'] = False
         else:
             data.pop('default', None)