diff --git a/ppstructure/README.md b/ppstructure/README.md
index 8e1642cc75cc52b179d0f8441a8da2fe86e78d7b..0d0d93ef8e166a3f7a07c1ce467cf2069934dc44 100644
--- a/ppstructure/README.md
+++ b/ppstructure/README.md
@@ -36,7 +36,7 @@ python3 -m pip install paddlepaddle-gpu==2.1.1 -i https://mirror.baidu.com/pypi/
 - **(2) Install Layout-Parser**
 
 ```bash
-pip3 install -U premailer paddleocr https://paddleocr.bj.bcebos.com/whl/layoutparser-0.0.0-py3-none-any.whl
+pip3 install -U https://paddleocr.bj.bcebos.com/whl/layoutparser-0.0.0-py3-none-any.whl
 ```
 
 ### 2.2 Install PaddleOCR（including PP-OCR and PP-Structure）
diff --git a/ppstructure/README_ch.md b/ppstructure/README_ch.md
index c8acac590039647cf52f47b16a99092ff68f2b6e..9ba017daf7b50bd3a5590df76eba2ad9e3fc5bf6 100644
--- a/ppstructure/README_ch.md
+++ b/ppstructure/README_ch.md
@@ -36,7 +36,7 @@ python3 -m pip install paddlepaddle-gpu==2.1.1 -i https://mirror.baidu.com/pypi/
 - **(2) 安装 Layout-Parser**
 
 ```bash
-pip3 install -U premailer paddleocr https://paddleocr.bj.bcebos.com/whl/layoutparser-0.0.0-py3-none-any.whl
+pip3 install -U https://paddleocr.bj.bcebos.com/whl/layoutparser-0.0.0-py3-none-any.whl
 ```
 
 ### 2.2 安装PaddleOCR（包含PP-OCR和PP-Structure）
diff --git a/requirements.txt b/requirements.txt
index d96b3a9d84d30b221e3e0d4b302d634c1681272f..decaa92b969df8b1a96045ae4e3f1ee81d1ea564 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,4 +7,6 @@ tqdm
 numpy
 visualdl
 python-Levenshtein
-opencv-contrib-python==4.2.0.32
\ No newline at end of file
+opencv-contrib-python==4.2.0.32
+lxml
+premailer
\ No newline at end of file