According to the analytic hierarchy process (AHP) and referring to the national standard, the evaluation index of the energy consumption of the centrifugal pump system and the evaluation system of the centrifugal pump system were established. By using the theory of fuzzy mathematics, a complete evaluation method was formed.Using Matlab to solve the matrix of the largest features to determine the weight of each factor.The threshold value of each factor was obtained by statistical method, and the fuzzy matrix of each factor was obtained.The evaluation of energy consumption of a centrifugal pump in a factory was carried out. The evaluation results showed that the pump efficiency was the main factor affecting the centrifugal pump system;the energy consumption grade of the centrifugal pump system was 2, and the overall operation of the system was reasonable; in the single factor evaluation, the energy efficiency level of transmission efficiency was 4, which indicated that the drive mechanism was not running properly and needed to be handled.Therefore, this method had an important guiding significance for the energysaving transformation of the centrifugal pump system.