Using 12 North American standard soybean cultivars MG0-MGⅢ as the control group, sixty five soybeanvarieties which were main cultivars of Tieling area, newly released varieties and control cultivars in national and pro-vincial regional trials were selected, and they were grouping according to their growing period. The results showedthat among 65 tested varieties, six were divided into MGⅠgroup, eighteen divided into MGⅡ group, forty one divid-ed into MGⅢ group. The growth period in Tieling area corresponds to group MG0-MGⅢ, of which MGⅢ varietieswere more suitable to climatic conditions in Tieling area.