The invention relates to the technical field of reactive voltage control effect evaluation of a power distribution network, more specifically, the present invention relates to a reactive voltage control effect evaluation index method for the power distribution network. The method comprises the following steps: establishing a power grid operation reactive voltage control effect evaluation index system, determining qualified ranges of evaluation indexes of a voltage factor and a power factor, collecting actual measurement data, obtaining weights of the evaluation indexes through analysis and sorting the weights, and selecting an optimal reactive voltage treatment scheme according to the sorting. According to the invention, comprehensive evaluation can be provided for the reactive voltage treatment control effect of the power distribution network, and the optimal reactive voltage treatment scheme can be obtained according to the evaluation.