As an important part of transformer area management, the article proposes a comprehensive evaluation method of transformer area based on edge computing in order to solve the problems of large amount of data and lack of standardized management. First, use the transformer area as an edge computing node, collect the monitoring data of the transformer area by installing an intelligent fusion terminal, and pre-process the data on the spot; secondly, establish a transformer area characteristic index system; then use the analytic hierarchy process and the CRITIC method to find out The subjective and objective weight of each indicator; finally, the comprehensive weight is obtained by the Lagrangian optimal multiplier method, the comprehensive score of the transformer area is given, and the operation status of the transformer area is judged, and the final result is uploaded from the intelligent fusion terminal to the main station. Through the case analysis of several stations in a certain area, the feasibility and effectiveness of the evaluation method are verified, and it has certain engineering application value.