摘　要:CADDS5是美国PIC公司在UNIX操作系统支持下的计算机辅助设计与绘图系统软件。文章主要介绍了如何应用CADDS5二次开发手段进行管道路综合布置辅助设计，是工厂产品三维设计又一新的突破点，为工厂的三维设计增加新的亮点。

-Abstract : CADDS5 PIC of the United States in support of the UNIX operating system of computer-aided design and drawing software system pieces. This paper describes the application of secondary development CADDS5 means of an integrated road layout Aided Design, Factory products is another 3D design a new breakthrough for the factory 3D design new spot.