Genetic parameters on main quantitative characters were analyzed in this paper for the soybeanvarieties used as parents. The results showed: (1) the differences among the soybeans were significant for most of the traits and the degree of variation for pod number per plant, seed number perplant, seed weight per plant and 100-seed weight was high, (2) the heritabilitis for percentage of undamaged seed and resistance index to disease were high, and (3) the values of both genetic advanceand relatively genetic advance were. high. The estimates of response to the selection index equationbased on pod number per plant, seed number per plant, 100-seed weight, resistance index to disease, percentage of undamaged seeds were high.