In this paper, the design and related technologies of Smart Grid Dispatching Operation Management System of Liaoning Province, which is integrated, is studied. In recent years, with the rapid growth of grid-scale and increasing demand for electric power dispatching, the normative and process-oriented requirements to Dispatching Operation Management System are becoming more prominent. The dispersion of the original independent system has not met the needs of development and construction of Dispatching Operation Management System, so unified updates and re-integration of resources must be enforced.