The invention provides a method and device for determining a wind power distribution scheme in an electric system. The method comprises the steps of determining a factor set according to the influence factors of wind power distribution of the electric system, wherein the factor set contains multiple evaluation criterions, and each evaluation criterion includes at least one evaluation index; establishing a fuzzy evaluation comment set and a score set, and computing an evaluation matrix of the evaluation indexes by means of a fuzzy membership function; acquiring a criterion evaluation result of the evaluation criterions according to a preset evaluation index weight set and the evaluation matrix, and acquiring an evaluation result of the factor set according to a preset evaluation criterion weight set and the criterion evaluation result; acquiring predetermined alternative wind power distribution schemes, acquiring the scores of the alternative wind power distribution schemes according to the score set and the evaluation result, and determining the actual wind power distribution scheme.