diff --git a/kag/builder/component/reader/markdown_reader.py b/kag/builder/component/reader/markdown_reader.py
index 49c19ec1..f1c8f300 100644
--- a/kag/builder/component/reader/markdown_reader.py
+++ b/kag/builder/component/reader/markdown_reader.py
@@ -714,15 +714,17 @@ def _process_intermediate_level_node(
         current_contents = parent_contents + ([node.content] if node.content else [])
         has_target_level = False
 
+        current_id = None
+
         # Create chunk for current node if it has content
         if node.content and node.title != "root":
             full_title = " / ".join(current_titles)
+            current_id = generate_hash_id(full_title)
             parent_content = (
                 "\n".join(filter(None, parent_contents)) if parent_contents else None
             )
-
             current_chunk = Chunk(
-                id=generate_hash_id(full_title),
+                id=current_id,
                 parent_id=parent_id,
                 name=full_title,
                 content=node.content,
@@ -734,7 +736,7 @@ def _process_intermediate_level_node(
         # Process children
         for child in node.children:
             child_outputs, child_map = self._convert_to_outputs(
-                child, id, parent_id, current_titles, current_contents
+                child, id, current_id, current_titles, current_contents
             )
             if child_outputs:
                 has_target_level = True