diff --git a/rag/app/naive.py b/rag/app/naive.py
index ef84fa69cb..22606c3b32 100644
--- a/rag/app/naive.py
+++ b/rag/app/naive.py
@@ -881,7 +881,8 @@ def chunk(filename, binary=None, from_page=0, to_page=100000, lang="Chinese", ca
             tables = append_context2table_image4pdf(sections, tables, image_context_size)
 
         if name in ["tcadp", "docling", "mineru", "paddleocr"]:
-            parser_config["chunk_token_num"] = 0
+            if int(parser_config.get("chunk_token_num", 0)) <= 0:
+                parser_config["chunk_token_num"] = 0
 
         res = tokenize_table(tables, doc, is_english)
         callback(0.8, "Finish parsing.")