Micro-grid system contains variety of power sources and loads. In the system, as the fluctuation range and speed of power sources is more rapidly than that of loads, so naturally,power source has greater impact on the disturbance of micro-grid stability than load. Traditional system for energy management does not work anymore. In order to make full extent of Micro-grid system, much optimization should be imposed on energy management system. The paper put forward a novel energy management system suitable for Micro-grid system concerned. The system could achieve all-round monitor, synchronous monitor, pre-alert and multiple-target energy optimization. Compared to the original energy management system, the proposed micro-grid energy management systems could further improve the micro-grid control function, control accuracy, and provide important support to the development and application of the prototype system.