diff --git a/paddleocr.py b/paddleocr.py
index 0f7dabd160..2dbefd566e 100644
--- a/paddleocr.py
+++ b/paddleocr.py
@@ -915,8 +915,10 @@ def main():
     """
     # for cmd
     args = parse_args(mMain=True)
+    logger.info("for usage help, please use `paddleocr --help`")
     image_dir = args.image_dir
     if is_link(image_dir):
+        os.remove("tmp.jpg") if os.path.exists("tmp.jpg") else None
         download_with_progressbar(image_dir, "tmp.jpg")
         image_file_list = ["tmp.jpg"]
     else:
diff --git a/tools/infer/utility.py b/tools/infer/utility.py
index a0ac59ff86..c40fc6b1b6 100644
--- a/tools/infer/utility.py
+++ b/tools/infer/utility.py
@@ -49,7 +49,7 @@ def init_args():
     parser.add_argument("--gpu_id", type=int, default=0)
 
     # params for text detector
-    parser.add_argument("--image_dir", type=str, required=True)
+    parser.add_argument("--image_dir", type=str)
     parser.add_argument("--page_num", type=int, default=0)
     parser.add_argument("--det_algorithm", type=str, default="DB")
     parser.add_argument("--det_model_dir", type=str)