diff --git a/main.py b/main.py
index 2fb1070..071f086 100644
--- a/main.py
+++ b/main.py
@@ -146,7 +146,7 @@ def concatenate_images_vertically(img_obj_list):
 
 def pre_batch_task(lines):
     """
-    批次任务
+    每个线程的批次任务
     """
     for line in lines:
         line = line.strip()  # 去掉每行开头和结尾的空白字符