diff --git a/README.md b/README.md
index 5e2734d67f74f5eaf06b860b65b974504c612a4d..4fa721d9f67b1f4c8ef7581b9ecc8cd543f3690c 100644
--- a/README.md
+++ b/README.md
@@ -120,6 +120,7 @@ For a new language request, please refer to [Guideline for new language_requests
     - [Two-stage Algorithm](./doc/doc_en/algorithm_overview_en.md)
     - [PGNet Algorithm](./doc/doc_en/algorithm_overview_en.md)
     - [Python Inference](./doc/doc_en/inference_en.md)
+    - [Use PaddleOCR Architecture to Add New Algorithms](./doc/doc_en/add_new_algorithm_en.md)
 - Data Annotation and Synthesis
     - [Semi-automatic Annotation Tool: PPOCRLabel](./PPOCRLabel/README.md)
     - [Data Synthesis Tool: Style-Text](./StyleText/README.md)
@@ -127,7 +128,7 @@ For a new language request, please refer to [Guideline for new language_requests
     - [Other Data Synthesis Tools](./doc/doc_en/data_synthesis_en.md)
 - Datasets
     - [General OCR Datasets(Chinese/English)](./doc/doc_en/datasets_en.md)
-    - [HandWritten_OCR_Datasets(Chinese)](./doc/doc_en/handwritten_datasets_en.md)
+    - [Handwritten OCR Datasets(Chinese)](./doc/doc_en/handwritten_datasets_en.md)
     - [Various OCR Datasets(multilingual)](./doc/doc_en/vertical_and_multilingual_datasets_en.md)
 - [Visualization](#Visualization)
 - [New language requests](#language_requests)
diff --git a/README_ch.md b/README_ch.md
index 5cd675ed096a98e07fff3eaf39cfe9d82a4566a7..f6f273e0440ecadc681aafb3271c0b65f2144f92 100755
--- a/README_ch.md
+++ b/README_ch.md
@@ -94,7 +94,7 @@ PaddleOCR旨在打造一套丰富、领先、且实用的OCR工具库，助力
 - PP-OCR产业落地：从训练到部署
     - [PP-OCR模型库](./doc/doc_ch/models.md)
         - [PP-OCR模型下载](./doc/doc_ch/models_list.md)
-        - [PP-OCR模型库Python推理](./doc/doc_ch/inference_ppocr.md)
+        - [基于Python引擎的PP-OCR模型库推理](./doc/doc_ch/inference_ppocr.md)
     - [PP-OCR模型训练](./doc/doc_ch/training.md)
         - [文本检测](./doc/doc_ch/detection.md)
         - [文本识别](./doc/doc_ch/recognition.md)
@@ -114,9 +114,10 @@ PaddleOCR旨在打造一套丰富、领先、且实用的OCR工具库，助力
     - [其它数据标注工具](./doc/doc_ch/data_annotation.md)
     - [其它数据合成工具](./doc/doc_ch/data_synthesis.md)
 - OCR学术圈
-    - [两阶段模型介绍与下载](./doc/doc_ch/algorithm_overview.md)
+    - [两阶段算法](./doc/doc_ch/algorithm_overview.md)
     - [端到端PGNet算法](./doc/doc_ch/pgnet.md)
     - [基于Python脚本预测引擎推理](./doc/doc_ch/inference.md)
+    - [使用PaddleOCR架构添加新算法](./doc/doc_ch/add_new_algorithm.md)
 - 数据集
     - [通用中英文OCR数据集](./doc/doc_ch/datasets.md)
     - [手写中文OCR数据集](./doc/doc_ch/handwritten_datasets.md)
diff --git a/doc/doc_ch/inference_ppocr.md b/doc/doc_ch/inference_ppocr.md
index 4c37a6955799a65bc192b211095288ff8a120461..c33401dc4a0539954b934eeeed035e18aef382fc 100644
--- a/doc/doc_ch/inference_ppocr.md
+++ b/doc/doc_ch/inference_ppocr.md
@@ -1,4 +1,4 @@
-# PP-OCR模型库Python推理
+# 基于Python引擎的PP-OCR模型库推理
 
 本文介绍针对PP-OCR模型库的Python推理引擎使用方法，内容依次为文本检测、文本识别、方向分类器以及三者串联在CPU、GPU上的预测方法。
 
diff --git a/doc/doc_en/add_new_algorithm_en.md b/doc/doc_en/add_new_algorithm_en.md
index dc81f1820f5d72a54f66fcddd716f18e5f6607e4..db72fe7d4b4b5b5d12e06ff34140c9da1186319b 100644
--- a/doc/doc_en/add_new_algorithm_en.md
+++ b/doc/doc_en/add_new_algorithm_en.md
@@ -1,4 +1,4 @@
-# Add new algorithm
+# Add New Algorithm
 
 PaddleOCR decomposes an algorithm into the following parts, and modularizes each part to make it more convenient to develop new algorithms.
 
@@ -263,7 +263,7 @@ Metric:
   main_indicator: acc
 ```
 
-## 优化器
+## Optimizer
 
 The optimizer is used to train the network. The optimizer also contains network regularization and learning rate decay modules. This part is under [ppocr/optimizer](../../ppocr/optimizer). PaddleOCR has built-in
 Commonly used optimizer modules such as `Momentum`, `Adam` and `RMSProp`, common regularization modules such as `Linear`, `Cosine`, `Step` and `Piecewise`, and common learning rate decay modules such as `L1Decay` and `L2Decay`.
diff --git a/doc/doc_en/environment_en.md b/doc/doc_en/environment_en.md
index 96a46cce3010934689e8d95985ca434f49d18886..7c15add42abb571144020417a112d6c21c066a41 100644
--- a/doc/doc_en/environment_en.md
+++ b/doc/doc_en/environment_en.md
@@ -1,5 +1,7 @@
 # Environment Preparation
 
+Windows and Mac users are recommended to use Anaconda to build a Python environment, and Linux users are recommended to use docker to build a Python environment. If you are familiar with the Python environment, you can skip to step 2 to install PaddlePaddle.
+
 * [1. Python Environment Setup](#1)
   + [1.1 Windows](#1.1)
   + [1.2 Mac](#1.2)