The invention relates to the field of power grid monitoring management. Based on power grid on-line monitoring information, a method for managing power utilization user behaviors can be popularized in the power grid supervision automation field. According to the management method, power utilization information data are processed with a specific analysis method, on-line judgment management is accordingly carried out on the user behaviors, and users with the power stealing behaviors are screened. The method includes the following four parts including meter voltage loss transaction monitoring, meter cutoff transaction monitoring, daily capacity exceeding transaction monitoring and zero-degree user current transaction monitoring. By means of the method, the above four parts are integrated organically, so that the judgment accuracy of the power stealing phenomena is accordingly improved, and the human cost input is reduced.