diff --git a/api/controllers/console/admin.py b/api/controllers/console/admin.py
index 92c94221b8..0c8d4e331c 100644
--- a/api/controllers/console/admin.py
+++ b/api/controllers/console/admin.py
@@ -8,6 +8,7 @@ from werkzeug.exceptions import NotFound, Unauthorized
 from controllers.console import api
 from controllers.console.wraps import only_edition_cloud
 from extensions.ext_database import db
+from libs.helper import supported_language
 from models.model import RecommendedApp, App, InstalledApp
 
 
@@ -47,8 +48,7 @@ class InsertExploreAppListApi(Resource):
         parser.add_argument('desc', type=str, location='json')
         parser.add_argument('copyright', type=str, location='json')
         parser.add_argument('privacy_policy', type=str, location='json')
-        parser.add_argument('language', type=str, required=True, nullable=False, choices=['en-US', 'zh-Hans'],
-                            location='json')
+        parser.add_argument('language', type=supported_language, required=True, nullable=False, location='json')
         parser.add_argument('category', type=str, required=True, nullable=False, location='json')
         parser.add_argument('position', type=int, required=True, nullable=False, location='json')
         args = parser.parse_args()
diff --git a/api/controllers/console/app/app.py b/api/controllers/console/app/app.py
index 83d6840838..127a568f7f 100644
--- a/api/controllers/console/app/app.py
+++ b/api/controllers/console/app/app.py
@@ -215,7 +215,11 @@ class AppTemplateApi(Resource):
         account = current_user
         interface_language = account.interface_language
 
-        return {'data': demo_model_templates.get(interface_language)}
+        templates = demo_model_templates.get(interface_language)
+        if not templates:
+            templates = demo_model_templates.get('en-US')
+
+        return {'data': templates}
 
 
 class AppApi(Resource):