Abstract: This article Used VC++, ObjectARX and other development languages and tools to redeveloped the AutoCAD, and form a metro integrated track laying software, open the data interface between different specialties in the metro track laying process, and implemente the functions of data import, verification, automatic drawing and data export of metro track laying process. It can solve the problems such as poor coordination between specialties, long drawing time and error prone data in manual drawing. The software has been successfully applied in Zhengzhou metro construction, Ningtian intercity rail laying, Wuhan Metro construction and other projects, which significantly improves the drawing efficiency and drawing quality.