Abstract: The function of the power grid in the new round energy revolution will be significantly extended on the basis of the traditional power grid. Based on a deep understanding on the core of the new round energy revolution, a beneficial exploration on the future multi-energy supply system is conducted in this paper with the help of power system optimization planning model. We did a comprehensive analysis combining technical, economic, institutional and environmental factors. The SWOT-AHP technology is adopted to analyze the inner and outer environment of grid development and to facilitate the grid function enhancement. Numerical results suggest that the future power grid will develop towards larger capacity, safer and more intelligent ones, and the integration of multiple energy would also be a main feature.