The invention provides a method for scientifically feeding multiparous sows through a three-stage nutrient scheme. The method comprises the following steps that the sows are fed with gestation feed from the gestation period of the sows to 84-89 days after the gestation period, the sows are fed with feed for increasing birth weight of piglets from the time 85-90 days after the gestation period to the delivery period, the sows are fed with lactation feed in the lactation period, and then the method is completed. The sow three-stage nutrient scheme design can systematically promote production performance of the sows and suckling piglets.