The invention discloses an evaluation method of a smart power grid integration demonstration project, which comprises the following steps that 1) a plurality of indexes for evaluating the to-be-evaluated smart power grid integration demonstration project serve as index layers; classification layers are set for the indexes in the index layers according to influence differences between the indexes and total objects of object layers; 2) significance weight numbers of the specific indexes, relative to the total objects, of the index layers and the classification layers are calculated by an analytic hierarchy method; evaluation scores of the indexes are calculated by a multi-stage fuzzy integration evaluation method; and 3) based on a result of Step 2), the evaluation scores of the indexes in the same layer are multiplied by the sum of the significance weight numbers of the indexes relative to the total objects, that is total scores of the to-be-evaluated smart power grid integration demonstration project are obtained. The method can forecast a popularization and application effect of the demonstration project in advance, and saves the expenses.