diff --git a/apps/application/serializers/application.py b/apps/application/serializers/application.py
index 5011d8b8d..2e4bc033e 100644
--- a/apps/application/serializers/application.py
+++ b/apps/application/serializers/application.py
@@ -167,7 +167,7 @@ class ApplicationCreateSerializer(serializers.Serializer):
                                name=application.get('name'),
                                desc=application.get('desc'),
                                workspace_id=workspace_id,
-                               folder_id=application.get('folder_id', 'root'),
+                               folder_id=application.get('folder_id', application.get('workspace_id')),
                                prologue="",
                                dialogue_number=0,
                                user_id=user_id, model_id=None,
@@ -250,7 +250,7 @@ class ApplicationCreateSerializer(serializers.Serializer):
                                prologue=application.get('prologue'),
                                dialogue_number=application.get('dialogue_number', 0),
                                user_id=user_id, model_id=application.get('model_id'),
-                               folder_id=application.get('folder_id', 'root'),
+                               folder_id=application.get('folder_id', application.get('workspace_id')),
                                knowledge_setting=application.get('knowledge_setting'),
                                model_setting=application.get('model_setting'),
                                problem_optimization=application.get('problem_optimization'),