diff --git a/example/post_training_quantization/detection/README.md b/example/post_training_quantization/detection/README.md
index 2f155a3885585f685046c64b09d19e254260d5c4..50fc77c99a7b7012b971542a1f5b69a2515382cd 100644
--- a/example/post_training_quantization/detection/README.md
+++ b/example/post_training_quantization/detection/README.md
@@ -94,8 +94,8 @@ python tools/export_model.py \
 - PicoDet-s模型，包含NMS：如快速体验，可直接下载[PicoDet-s导出模型](https://paddledet.bj.bcebos.com/deploy/Inference/picodet_s_416_coco_lcnet.tar)
 
 ```shell
-python tools/export_model.py -c configs/picodet/picodet_s_320_coco_lcnet.yml \
-       -o weights=https://paddledet.bj.bcebos.com/models/picodet_s_320_coco_lcnet.pdparams \
+python tools/export_model.py -c configs/picodet/picodet_s_416_coco_lcnet.yml \
+       -o weights=https://paddledet.bj.bcebos.com/models/picodet_s_416_coco_lcnet.pdparams \
        --output_dir=output_inference \
 ```