涡旋盘端面型线的图形设计是涡旋压缩机工程图设计中的一个难点，本文以涡旋盘的端面型线为研究对象，提出了通过对零件进行结构分析，提取能描述其几何结构的基本模型和参数，建立参数化几何模型，使图形具有随设计参数变化而变化的能力。利用该方法设计的工程图，图形精确度高，图形生成速度快，使产品易于变型及系列化，能明显缩短产品的开发设计周期。 The graphic design of the scroll profile is a difficult problem in the design of the scroll compressor. In this paper, the profile of the scroll is taken as the research object. It is proposed that the geometry of the scroll can be described by structural analysis of the part, The basic model and parameters, the establishment of parametric geometric model, the graphics have the ability to change with the design parameters. The engineering drawings designed by this method have high accuracy of graphics and high speed of graphics generation, which makes the products easy to change and serialize, which can obviously shorten the product development and design cycle.