介绍了冷拔钢管计算机辅助工艺设计系统，阐述了它在钢管生产中的作用，分析了它的组成结构和设计方法。新型CAPP系统综合了检索式和创成式的优点，并将成组技术和专家系统技术应用于软件设计，具有较强的实用性和较高的智能性，该系统目前已应用于钢管生产。同时还指出了CAPP系统开发中应注意的问题。 This paper introduces the computer aided process design system of cold drawn steel pipe, expounds its role in the production of steel pipe, analyzes its composition structure and design method. The new CAPP system integrates the advantages of search formula and generative formula, and applies group technology and expert system technology to software design, which has strong practicability and high intelligence. The system has been applied to steel pipe production at present. At the same time, it points out the problems that CAPP system should pay attention to.