The invention relates to a compound class II absorption heat pump on a single-stage basis, belonging to the technical field of heat pumps. In a single-stage heat pump comprising a generator, a condenser, an evaporator, an absorber, a solution pump, a cryogen liquid pump and a solution heat exchanger, a generator, an absorber, an absorber-evaporator, a solution pump, a cryogen liquid pump or a throttle valve, a solution heat exchanger and a second solution heat exchanger are additionally arranged, wherein the evaporator is communicated with the new absorber-evaporator through a cryogen steam channel; the new generator is communicated with the condenser through a cryogen steam channel, communicated with the outside through a waste heat medium pipeline and communicated with the new absorber through the new solution pump and the two new solution heat exchangers; the new absorber is also communicated with the new absorber-evaporator through the second solution heat exchanger; the new absorber-evaporator is also communicated with the new generator through the new solution heat exchangers; the absorber-evaporator is communicated with the new absorber through the cryogen steam channel after the condenser is communicated with the new absorber-evaporator through the new cryogen liquid pump; and the new absorber is also communicated with the outside through a heated medium pipeline to obtain the compound class II absorption heat pump on the single-stage basis.