The invention belongs to the technical field of energy utilization, and discloses an energy utilization system and an energy utilization method for comprehensively utilizing natural energy. The energyutilization method comprises the steps of: detecting quality, density and availability of energy, converting the natural energy into available energy, and storing the available energy; predicting energy consumption data, and planning energy utilization; optimizing an energy scheduling plan, and scheduling and utilizing the planned energy; and finally, storing and displaying data. According to thee...