目前，数控线切割技术作为一种高精度、高自动化的加工方法，在机械加工行业得到了广泛的应用。本文对数控线切割中的四轴联动及其自动编程进行了简要介绍，并在此基础上对瑞士Ｃｈａｒｍｉｌｌｅｓ公司的ＰＰＳ软件包的编程形式、编程语言、以及联动加工的锥度模式、一类扭曲模式和上下异型模式进行了详细的分析研究。 At present, CNC wire cutting technology as a high-precision, highly automated processing methods, in the machining industry has been widely used. In this paper, CNC axis cutting in the four-axis linkage and its automatic programming are briefly introduced, and on this basis, the Swiss Charmilles company’s PPS package programming form, programming language, and the taper mode linkage processing, a class of twisted mode And up and down the abnormal pattern of a detailed analysis.