The invention belongs to the field of scheduling and management of power distribution networks and provides a method and a system for managing microgrid energy. An intelligent electric meter acquires electric quantity information of each load of a microgrid system; an intelligent terminal receives data of the electric quantity information acquired by the intelligent electric meter and outputs the acquired data through an Ethernet in real time; a microgrid system controller receives the information data output by the intelligent terminal, arranges the information data output by the intelligent terminal, performs logic judgment according to a preset microgrid control strategy, acquires a microgrid control criterion execution instruction and transmits the control instruction to the intelligent terminal, so that distributed power supply optimized control, energy economic scheduling, regenerative energy output forecast, reactive power optimization and voltage control, demand side response, plug-and-play, grid connection, island conversion and other application functions are realized; therefore, the characteristics of toughness, reliability, high attack resistance and high economy of an intelligent power grid are embodied; and the method and the system have a great significance for popularization and demonstration.