Based on the utility theory and comprehensive evaluation method， a total utility evaluation indices system of electric power universal service is set up， which presents the 3-dimensional utility evaluation including society， residents and enterprises. The segment utility function model is constructed to derive the effectiveness of evaluation indices. Secondly， using eigenvalue method， weight of each index is determined. Finally， comprehensive utility evaluation of electric power universal service is obtained by using the coordination synthesis model. Empirical researches on Yunnan province show that this quantitative utility evaluation method can be used to rationally evaluate the implementation and programmed decision-making of electric power universal service.