给出了异型包装纸盒参数化设计中关键参数的确定方法，以系统中的一个异型盒型为例，论述了异型盒参数化设计过程中各参数之间的关系，确定了参数化设计的关键参数，并给出了相关的计算公式。开发了一套能展示立体的线框图、贴图后的效果图以及平面展开的线框图等的设计系统，为异型包装纸盒的设计提供便利。

The determination method of key parameters for parametric design of special shape packaging carton was introduced. Relationship among the parameters in the course of design was discussed with example. The key parameters of the example were determined and the correlative calculation formulas were provided. A corresponding design system with the functions of showing line frame model, rendering model, and evolving drawing etc. was developed, which provide convenience for design of special shape packaging carton.