Abstract: Based on our experimental results of trousers structure design,we argue that it is unreasonable to equal the back and front distribution of saddle width loose quantity and it is inappropriate to remain an average of two centimeters′ margin of buttocks and waist in terms of buttocks and waist structural parameter data processing.This study aims to redistribute the saddle width loose quantity,readjust the margin of buttocks and waist,and standardize the buttocks and waist structural parameter.Based on the correlation between lower limbs characteristics and body engineering science,this study explores a more scientific and appropriate trousers structure design,which alters the saddle width loose quantity distribution as well as the buttocks and waist structural parameter data processing.It will make the trousers configuration design more consist with human body lower limbs′ characteristics and their sports function.Hopefully,this study can provide some valuable suggestions for future sample trousers design.