There are shortcomings in the comprehensive evaluation of the national grid power equipment suppliers. To tackle this, a fuzzy comprehensive evaluation model based on game theory combined weighting is designed. First, the model constructs an evaluation system including features such as equipment ledger, equipment defects and equipment installation scope, and uses the analytic hierarchy process and factor analysis method to calculate the subjective weight and objective weight of each evaluation index. Then, the idea of the game theory set is used to combine and weight the two weights. Finally, the supplier category is determined according to the principle of maximum membership, and the final evaluation is completed. Taking the example of 162 power equipment suppliers put into operation by the State Grid Corporation from 2004 to 2018, the results show that there are 30 A-type suppliers, 16 B-type suppliers and 116 C-type suppliers. The objective rationality of the evaluation model is verified, and this can provide reference value for the grid company to make management decisions for power equipment suppliers. This work is supported by Science and Technology Project of State Grid Corporation of China (No. 52022318001H).