Multifunctional heat pump drying device

The invention discloses a multifunctional heat pump drying device which can solve the problems that an existing heat pump drying device can only conduct drying and is long in idle time and low in utilization rate. The multifunctional heat pump drying device comprises a drying room, heat pump equipment and humidifying equipment, the space in the drying room is divided into a heating and refrigerating treatment chamber and a drying and refrigerating chamber by a partition part, and an exhaust valve and a fresh air valve are arranged on the wall body, corresponding to the heating and refrigerating treatment chamber, of the drying room; the heat pump equipment comprises an outdoor main machine and an indoor part, the outdoor main machine comprises a compressor, a four-way valve, a second heat exchanger, a throttling component and a second fan, and the indoor part comprises a first heat exchanger and a first fan which are arranged in the heating and refrigerating treatment chamber; and the humidifying equipment is