Abstract: Aimed at girl’s growth of physical characteristics in advance and dislocation phenomenon between production and sales, selected Liaoning region as sample source, randomly sample 312 school age girls, perform manual measuring, then adopt SPSS statistical analysis software to analyze data, factor analysis, according to chest-body ratio and chest-waist ratio , execute rapid clustering analysis. the result divide liaoning school-age girl into BT slender standard body, BS standard body, and BF obesity standard bady. This thesis research results will provide valuable reference for making new standard size, and provide basis and data for realizing wear garment intelligent CAD system, and provides the making pattern experience and promote structural design of the individuation, diversity and fitness.