diff --git a/README.md b/README.md
index 6adef0dcd..867d2ea22 100644
--- a/README.md
+++ b/README.md
@@ -98,6 +98,11 @@ Demo for video:
 ```shell
 python tools/demo.py video -n yolox-s -c /path/to/your/yolox_s.pth --path /path/to/your/video --conf 0.25 --nms 0.45 --tsize 640 --save_result --device [cpu/gpu]
 ```
+Demo for webcam:
+```shell
+python tools/demo.py webcam -n yolox-s -c /path/to/your/yolox_s.pth --camid "rtsp://account:passward@your_rtsp_address" --conf 0.25 --nms 0.45 --tsize 640 --device [cpu/gpu]
+```
+
 
 
 </details>
@@ -233,4 +238,4 @@ It is hoped that every AI practitioner in the world will stick to the concept of
 <div align="center"><img src="assets/sunjian.png" width="200"></div>
 没有孙剑博士的指导，YOLOX也不会问世并开源给社区使用。
 孙剑博士的离去是CV领域的一大损失，我们在此特别添加了这个部分来表达对我们的“船长”孙老师的纪念和哀思。
-希望世界上的每个AI从业者秉持着“持续创新拓展认知边界，非凡科技成就产品价值”的观念，一路向前。
\ No newline at end of file
+希望世界上的每个AI从业者秉持着“持续创新拓展认知边界，非凡科技成就产品价值”的观念，一路向前。
diff --git a/tools/demo.py b/tools/demo.py
index b16598d5f..ce11286f6 100644
--- a/tools/demo.py
+++ b/tools/demo.py
@@ -30,7 +30,11 @@ def make_parser():
     parser.add_argument(
         "--path", default="./assets/dog.jpg", help="path to images or video"
     )
-    parser.add_argument("--camid", type=int, default=0, help="webcam demo camera id")
+    parser.add_argument(
+        "--camid", 
+        default=0, 
+        help="camera id for webcam or usb, support rtsp and other formats, default for USB camera"
+    )
     parser.add_argument(
         "--save_result",
         action="store_true",
@@ -218,8 +222,10 @@ def imageflow_demo(predictor, vis_folder, current_time, args):
         os.makedirs(save_folder, exist_ok=True)
         if args.demo == "video":
             save_path = os.path.join(save_folder, os.path.basename(args.path))
-        else:
+        elif args.demo == "webcam":
             save_path = os.path.join(save_folder, "camera.mp4")
+        else:
+            logger.info("video demo type is not specified")
         logger.info(f"video save_path is {save_path}")
         vid_writer = cv2.VideoWriter(
             save_path, cv2.VideoWriter_fourcc(*"mp4v"), fps, (int(width), int(height))