The invention relates to a heat pump heat recovery type fresh air machine adopting return air supercooling and mixed air condensing. The heat pump heat recovery type fresh air machine comprises a compressor, a four-way reversing valve, an air exhaust coil pipe, a supercooling coil pipe, a throttling device, an air supply coil pipe, an air supply fan, an air exhaust fan and a bypass air port. The compressor, the four-way reversing valve, a refrigerant channel of the air exhaust coil pipe, a refrigerant channel of the supercooling coil pipe, the throttling device and a refrigerant channel of theair supply coil pipe are connected through a refrigerant connecting pipeline, a closed-cycle refrigerant flow path is formed, the air supply fan is connected with an air channel of the air supply coil pipe through an air supply air way, an air supply flow path is formed, an air channel of the supercooling coil pipe, an air channel of the air exhaust coil pipe and the air exhaust fan are connectedthrough an air exhaust air way, an air exhaust flow path is formed, the bypass air port communicates with the air supply air way and the air exhaust air way, and the bypass air port is opened under arefrigeration working condition and closed under a heating working condition. Under the condition that the volumes in the coil pipes are kept unchanged, the refrigerating capacity of unit mass flow of a refrigerant can be increased, and the air supply temperature can be reduced.