High-efficiency energy-saving grain drying machine and drying method

The invention discloses a high-efficiency energy-saving grain drying machine and a drying method. The drying machine adopts a brand-new heat source design provided by an air energy heat pump. The high-efficiency energy-saving grain drying machine comprises an air energy dehumidifying pump, a main room body, an auxiliary room body, a heat exchanger, a fan, an intelligent controller, electromagnetic valves, a temperature-humidity sensor, a stacking bed, a dehumidifying mechanism and a cabin door; the intelligent controller is used for transmitting a multi-point average humidity-temperature signal inside a room obtained by the temperature-humidity sensor, and each electromagnetic valve is electrically connected with the intelligent controller so as to realize the intelligent operation of the drying machine. The high-efficiency energy-saving grain drying machine and the drying method are used for drying the grain, so that the characteristics of high efficiency, energy conservation, intelligentization in operation and good grain quality can be realized.