The invention discloses a game theory-based power grid new technology equipment selection method and system. The method comprises the following steps of analyzing and proposing evaluation indexes forselecting the new technical equipment; respectively calculating subjective and objective weights of each evaluation index, and performing cooperative game on the two weights to obtain a comprehensiveweight; and calculating an index score of each equipment selection scheme, and comparing the schemes according to the index scores to obtain an optimal scheme. The invention provides an evaluation system for new technical equipment selection of a power grid. The weight obtained by the principal component analysis method and the Delphi method is subjected to cooperative game by using the idea of game, the comprehensive weight of the index is determined, each to-be-selected scheme is quantitatively evaluated to select the optimal scheme, and the method has important reference value for new equipment production, scheme reinforcement and power grid planning.