diff --git a/flask_app/routes/工程标解析main.py b/flask_app/routes/工程标解析main.py
index fd8f231..a33f872 100644
--- a/flask_app/routes/工程标解析main.py
+++ b/flask_app/routes/工程标解析main.py
@@ -54,7 +54,7 @@ def preprocess_files(output_folder, file_path, file_type,logger):
     tobidders_notice_table = truncate_files[3]       #投标人须知前附表
     tobidders_notice=truncate_files[4]   #投标人须知正文
 
-    invalid_path=truncate_files[5]     #无效标
+    invalid_path=truncate_files[5] if truncate_files[5]!="" else pdf_path    #无效标
     # invalid_docpath = copy_docx(docx_path)  # docx截取无效标部分
     # invalid_docpath=pdf2docx(invalid_path)
     invalid_added_pdf = insert_mark(invalid_path)