diff --git a/README.md b/README.md
index d71e9bd..60ce29a 100644
--- a/README.md
+++ b/README.md
@@ -66,3 +66,17 @@ BOT：您好，您上月共消费二十八元。
 BOT：您还想干什么
 
 ```
+
+### train word vector
+
+You can train your own MITIE model using following method:
+```
+$ git clone https://github.com/mit-nlp/MITIE.git
+$ cd MITIE/tools/wordrep
+$ mkdir build
+$ cd build
+$ cmake ..
+$ cmake --build . --config Release
+$ ./wordrep -e /path/to/your/folder_of_cutted_text_files
+```
+/path/to/your/folder_of_cutted_text_files above is a directory path in which has word cutted data files to train. This process may cost one or two days.