In order to improve the forecasting accuracy of monthly electricity sales and the refined operation management of power users. A management method of power transformer operation system is proposed. Through the establishment and use of the management and control working model of the special transformer, the forecasting accuracy of monthly electricity sales is improved, the early warning of electricity charges is realized to avoid arrears, and abnormal situations such as current loss and voltage loss of the special transformer users can be found and handled in time, thus preventing the loss of electricity and current. Using the mobile Internet and GPS positioning, the staff can query the equipment and geographical information of distribution GIS system in real time while patrolling the distribution circuit. Combined with the regular inspection of special transformer users, a series of measures have been implemented to improve the refined level of power transformer user management and provide better and better power supply services for special transformer users.