Abstract:Suzhou-style moon cakes were made using purple sweet potato，that not only can improve flavor and nutritional value，but also can provide greater development space for the value-added utilization of purple sweet potato.The optimum formula of purple sweet potato stuffing was determined by single factor test and orthogonal test.The optimum formula was：purple sweet potato 500 g，sugar 90 g，glutinous rice flour 55 g，water 15 g，butter 50 g，corn oil 25 g.Suzhou-style moon cakes which were made by the formula had round shape，shallow brown skin，clear section level，crisp taste，and the texture of stuffing was exquisite，uniform，soft and oleosus，the color was purple，its taste was moderate sweetness，and it had special flavor of purple sweet potato.