An air energy cycle power generator comprises an air energy storage device, an engine air supply control device, an electromagnetic valve air control system, a power generation, charging, supply and storage device, a power generation and supply device, an air engine, an engine starting device, a direct current motor transmission device and an air supply cycle control device. The air energy storage device is in communication with the motor air supply control device, and the engine air supply control device comprises a pressure reduction valve assembly (6), a buffering pot (10), a gas flow control valve (13), and a gas heat exchanger (16); a gas outlet of the gas heat exchanger (16) is connected to an air inlet of an air pipe three-way joint (18) by using a gas electromagnetic main valve (17), and a gas outlet of the air pipe three-way joint (18) is separately in communication with four air inflow cavities of the engine body of the air engine (34) by using a branch cylinder gas pipeline (20); the air supply cycle control device comprises an air compressor (45), a compressor electromagnetic clutch (40), and an air pressure control sensor (4); a gas outlet of the air compressor (45) is in communication with a pipeline of the air energy storage device by using the air pressure control sensor (4); the power generation and supply device comprises an alternating current generator (36), an alternating current generator output line (41), and an electrical appliance (35), and a transmission shaft of the alternating current generator (36) is coaxially connected to a transmission chain wheel (39) disposed on the compressor electromagnetic clutch (40); and the compressor electromagnetic clutch (40) is provided with the transmission chain wheel (39), and a driven chain wheel (48), and the driven chain wheel (48) is chained to a compressor transmission chain wheel (42) on the air compressor (45); the transmission chain wheel (39) is chained to an output shaft wheel (47) of the engine body of the air engine; the direct current motor transmission device comprises a direct current motor (43), a rectifying, charging and voltage stabilizing module (50), a direct current motor program controller (49), a rectifying inverter (51), and a battery set (44); a rotating shaft of the direct current motor (43) is connected to a driven chain wheel shaft of the compressor electromagnetic clutch, the direct current motor (43) is connected to the rectifying, charging and voltage stabilizing module (50), and the rectifying inverter (51) by using the direct current motor program controller (49), and the rectifying, charging and voltage stabilizing module (50) is connected to the rectifying inverter (51) and the battery set (44).