This article analyes the reasonableness of main structure lines in slacks pattern veriation,points out the keys of the patterns veriation and the design regularity for main structure lines.

• 本文对裤型变化中主要结构线的合理性进行了分析；指出了裤子结构变化的关键及主要结构线的设计规律；对裤子的结构设计具有指导意义.