diff --git a/apps/assets/api/asset.py b/apps/assets/api/asset.py
index 9e21c81be..c7bbeb094 100644
--- a/apps/assets/api/asset.py
+++ b/apps/assets/api/asset.py
@@ -51,7 +51,7 @@ class AssetViewSet(IDInCacheFilterMixin, LabelFilter, BulkModelViewSet):
     def set_assets_node(self, assets):
         if not isinstance(assets, list):
             assets = [assets]
-        node = Node.objects.get(value='Default')
+        node = Node.root()
         node_id = self.request.query_params.get('node_id')
         if node_id:
             node = get_object_or_none(Node, pk=node_id)
diff --git a/apps/orgs/mixins.py b/apps/orgs/mixins.py
index 431443ebe..f41ffccbe 100644
--- a/apps/orgs/mixins.py
+++ b/apps/orgs/mixins.py
@@ -212,5 +212,7 @@ class OrgResourceSerializerMixin(serializers.Serializer):
     """
     通过API批量操作资源时, 自动给每个资源添加所需属性org_id的值为current_org_id
     (同时为serializer.is_valid()对Model的unique_together校验做准备)
+    由于HiddenField字段不可读，API获取资产信息时获取不到org_id，
+    但是coco需要资产的org_id字段，所以修改为CharField类型
     """
-    org_id = serializers.HiddenField(default=get_current_org_id)
+    org_id = serializers.CharField(default=get_current_org_id)