The hypocotyls of mature seed of an eminent cultivar of peanut,’Hongsili’ were used for explants for somatic embryogenesis induction and,the regenerated plants were obtained.The hypocotyls were cut into segments and were placed on the MS medium contained 40mg/L 2,4-D to induce callus.The calli were transferred to MS medium with 20 mg/L 2,4-D for somatic embryo formation,the ratio of embryogenesis is 66.67% and the somatic embryos developed into wholly plants on the MS medium with gradually lowered concentration of BA.