The purpose of this study was to investigate the wearing condition according to different basic slacks` patterns and to provide fundamental data on structuring slacks` pattern using the multi-dimensional measuring method. 3 different kinds of basic slacks` patterns (A, B, C) were used and cross-sectional measurements of 6 parts were analysed. The results were as follows; 1) It revealed that the girth of waist, hip and thigh effected the degree of ease amounts. 2) Moire＇ pattern shape fully supported that the considerable body parts affected the change of ease amounts. 3) Basic pattern A was usually expected to be suitable for standard-sized or unmarried women who had not experienced body-type change. 4) Basic pattern B and C were suitable for large-sized or married women whose body-type had changed. Therefore the crotch length and depth, gredient of center back line has to be set up accurately.