Combined solar heat pump heating system

The invention discloses a combined solar heat pump heating system. The combined solar heat pump heating system mainly consists of a plurality of unit sets, wherein each unit set comprises a heat collecting plate and a heat pump set, the heat collecting plate is connected with an evaporator of the heat pump set, the heat collecting plate is movably unfolded to cover the heat pump set in a coverage range of the heat collecting plate, and the heat collecting plates can be further mutually connected so that the plurality of unit sets are combined. The heat collecting plates of the plurality of unit sets are mutually connected to form a ceiling type structure, the outer surfaces of the heat collecting plates are used for absorbing solar power and performing radiation and heat convection to the interior of a greenhouse, therefore, air in the greenhouse is heated, the flow of the air is increased, a heat radiation effect of a heat radiator can be effectively increased, the working performances of the heat pump set is improved, and the heat efficiency of a whole combined system is improved.