Control method and device of solar heat pump unit and solar heat pump unit

The invention relates to the technical field of heat pumps, and provides a control method and device of a solar heat pump unit and the solar heat pump unit, the solar heat pump unit comprises a water tank, a heat pump module and a solar module, the heat pump module and the solar module are used for supplying heat to the water tank, and the control method of the solar heat pump unit comprises the steps that the setting mode of the solar heat pump unit is obtained; according to the setting mode of the solar heat pump unit, a heat pump module and/or a solar module are/is controlled to start operation; wherein the solar heat pump unit has a plurality of setting modes, and in the plurality of setting modes, the demand degrees of users on hot water in the water tank are different. The heat pump and the solar energy are combined to serve as a heat source, multiple operation modes are provided, the purpose of saving electricity can be achieved, the corresponding operation mode can be matched according to the set requ