diff --git a/python/examples/faster_rcnn_model/README.md b/python/examples/faster_rcnn_model/README.md
index d3c6635b5f453b9398bbc62fbb8e776a215f233b..e31f734e2b8f04ee4cd35258f9da81672b2caf88 100644
--- a/python/examples/faster_rcnn_model/README.md
+++ b/python/examples/faster_rcnn_model/README.md
@@ -13,7 +13,7 @@ If you want to have more detection models, please refer to [Paddle Detection Mod
 ```
 tar xf faster_rcnn_model.tar.gz
 mv faster_rcnn_model/pddet* .
-GLOG_v=2 python -m paddle_serving_server_gpu.serve --model pddet_serving_model --port 9494 --gpu_id 0
+GLOG_v=2 python -m paddle_serving_server_gpu.serve --model pddet_serving_model --port 9494 --gpu_ids 0
 ```
 
 ### Perform prediction
diff --git a/python/examples/faster_rcnn_model/README_CN.md b/python/examples/faster_rcnn_model/README_CN.md
index a2c3618f071a3650d50c791595bc04ba0c1d378a..3ddccf9e63043e797c9e261c1f26ebe774adb81c 100644
--- a/python/examples/faster_rcnn_model/README_CN.md
+++ b/python/examples/faster_rcnn_model/README_CN.md
@@ -13,7 +13,7 @@ wget https://paddle-serving.bj.bcebos.com/pddet_demo/infer_cfg.yml
 ```
 tar xf faster_rcnn_model.tar.gz
 mv faster_rcnn_model/pddet* ./
-GLOG_v=2 python -m paddle_serving_server_gpu.serve --model pddet_serving_model --port 9494 --gpu_id 0
+GLOG_v=2 python -m paddle_serving_server_gpu.serve --model pddet_serving_model --port 9494 --gpu_ids 0
 ```
 
 ### 执行预测