ＡｕｔｏＣＡＤ在各个领域，特别是在机械工程领域得到了广泛的应用。为了缩短设计周期、减轻工作强度及标准化、规范化等，在ＡｕｔｏＣＡＤ平台上开发一些专业应用软件，如机械图计算机辅助设计系统，具有重要的意义。在此重点介绍了机械图计算机辅助设计系统的开发环境、系统功能和特点，并介绍了系统开发技巧 AutoCAD has been widely used in various fields, especially in the field of mechanical engineering. In order to shorten the design cycle, reduce work intensity and standardization, standardization, etc., in the AutoCAD platform to develop some professional applications, such as mechanical drawing computer-aided design system, is of great significance. This article focuses on the development of mechanical drawing computer-aided design system environment, system features and features, and introduced the system development skills