The invention provides a transformer substation energy efficiency evaluation method, which comprises the following steps of: firstly, finely analyzing various factors influencing the energy efficiencyof a transformer substation, obtaining the weight of each index by adopting a method of combining an analytic hierarchy process and an expert scoring method, and constructing an expert scoring weightsystem; meanwhile, in order to avoid the contingency of data results, different substations are investigated and researched, the initial data indexes of each substation are analyzed by accessing workers in the substations, a complete initial data index system is established, and then subsequent analysis is facilitated through data standardization; and finally, calculating the correlation coefficient and the weighted correlation degree to obtain the comprehensive energy efficiency evaluation index of each transformer substation, and simply evaluating the energy efficiency level of the investigated transformer substation by comparing the values to obtain the final energy efficiency levels of specific different transformer substations. According to the method, the energy efficiency analysisand evaluation of the transformer substation are simpler and more accurate.