对多种常见纸包装曲面及曲拱结构设计进行了调查统计，讨论了3种基于长方体盒型的异型纸盒曲面及曲拱结构变换方式，并给出了由造型设计尺寸来计算其平面展开尺寸的必要参数，得出了适用于这些变换方式下的尺寸计算公式，有利于曲拱及曲面结构的计算机辅助设计算法的发展。

Structure design of various common packaging cartons with curved or arched surface was surveyed. The transformation methods of curved or arched structures based on classic cuboid carton were discussed. The necessary parameters for calculation of plan spreading dimension from modeling design dimension were provided. Dimension calculation equation applicable for the transformation modes was obtained. The purpose was to provide reference for development of CAD technology in designing cartons with curved or arched surface.