The invention discloses a castor-oil plant seed uniform germination method. Castor-oil plant seeds are soaked in seed-soaking water to realize seed soaking. The seed-soaking water is prepared by diluting a speader with water for 1000 to 2000 times. The seed soaking time is limited within 24 hours, thus the castor-oil plant seeds demonstrate a good germination rate so as to realize the invention. According to the invention, the castor-oil plant seeds can demonstrate a quite good germination rate in a germination process the germination is uniform, and the uniformity of ripeness is promoted, so that the efficiency of harvesting can be raised.一種篦麻種子齊一性發芽方法,係將篦麻種子於浸種水中浸種,浸種水係以展著劑以水稀釋1000至2000倍,且浸種時間於24小時內,使篦麻種子具有良好的發芽率,藉此構成本發明。