diff --git a/llm_web_kit/main_html_parser/parser/layout_batch_parser.py b/llm_web_kit/main_html_parser/parser/layout_batch_parser.py
index 616d72e9..5259cea3 100644
--- a/llm_web_kit/main_html_parser/parser/layout_batch_parser.py
+++ b/llm_web_kit/main_html_parser/parser/layout_batch_parser.py
@@ -151,7 +151,7 @@ def find_blocks_drop(self, element, depth, element_dict, parent_keyy, parent_lab
             length_tail = len(element.tail.strip())
         idd = element.get('id')
         tag = element.tag
-        layer_nodes = element_dict[depth]
+        layer_nodes = element_dict.get(depth, {})
         class_tag = element.get('class')
         ori_keyy = (tag, class_tag, idd)
         if idd and idd.strip():