目的 研究异型纸盒以三维造型为基础完成二维展开结构的逆向设计。方法 以Creo钣金模块为主要设计工具，分析不同类型异形纸盒展成二维图形的方法及规律。结果 提出了适用于不同纸盒造型的3种钣金建模方法，总结了以长方体造型为基础的异型纸盒钣金件展平结果。结论 通过设计案例证明，利用Creo钣金工具进行异形纸盒逆向设计可以降低设计工作对设计师技能的依赖程度，并可加快新盒型的开发进程。

The work aims to study the reverse design method that deploys 3D solid modeling to 2D structure on irregular carton. Using sheet metal module of Creo, the methods and disciplines for different sorts of irregular carton were analyzed. Three kinds of modeling methods suitable for different carton shape were put forward. Metal flattening results of irregular carton deformed from rectangular block modeling were summarized. In conclusion, the reverse design method based on Creo sheet metal module can reduce the dependence on the designer's skills, and speed up the development process for new box type.