diff --git a/core/preprocess/hwvideoframe/README.md b/core/preprocess/hwvideoframe/README.md
index ab3b27d35d6d72da3ff480c165ea20e109c93c54..d740fe6ceae796cbcd8ac75ee28e139cbad10329 100644
--- a/core/preprocess/hwvideoframe/README.md
+++ b/core/preprocess/hwvideoframe/README.md
@@ -1,14 +1,22 @@
 # hwvideoframe
-简要说明
+hwvideoframe是一个基于cuda的图片预处理库。项目利用GPU进行图片预处理操作，加快处理速度的同时，提高GPU的使用率。
+
+## 项目结构
+hwvideoframe通过cpp的
+hwvideoframe目前提供以下图片预处理功能：
+* Image2Gpubuffer
+* Gpubuffer2Image
+* RGB2BGR
+* BGR2RGB
+* Div
+* Sub
+* Normalize
+* CenterCrop
+* Resize
+* ResizeByFactor
 
 ## 快速开始
-如何构建、安装、运行
+按照Paddle Serving文档编译，编译结果在reader中。
 
 ## 测试
-如何执行自动化测试
-
-## 如何贡献
-贡献patch流程、质量要求
-
-## 讨论
-百度Hi讨论群：XXXX
+测试文件：Serving/python/paddle_serving_app/reader/test_preprocess.py
diff --git a/python/paddle_serving_app/reader/__init__.py b/python/paddle_serving_app/reader/__init__.py
index 89cb60533b00bd627b3f2c320b938e5de61a1af2..9622d8347ab92b7d426ce7fa9229662fb82e3021 100644
--- a/python/paddle_serving_app/reader/__init__.py
+++ b/python/paddle_serving_app/reader/__init__.py
@@ -19,4 +19,4 @@ from .image_reader import DBPostProcess, FilterBoxes, GetRotateCropImage, Sorted
 from .lac_reader import LACReader
 from .senta_reader import SentaReader
 from libgpupreprocess import Image2Gpubuffer, Gpubuffer2Image, RGB2BGR, BGR2RGB
-from libgpupreprocess import Div, Sub, Normalize, CenterCrop, Resize
+from libgpupreprocess import Div, Sub, Normalize, CenterCrop, Resize, ResizeByFactor