The utility model discloses a wind source heat pump host machine provided with two groups of phase change medium channels. The wind source heat pump host machine comprises a compressor, a four-way valve, an expansion valve, a fan and a surface cooler, wherein a cold medium transformation device is arranged in the host machine; the host machine of the cold medium transformation device is correspondingly provided with two groups of interfaces, and each group consists of two interfaces; a host machine power supply and a control panel are connected with the compressor, the four-way valve, the fan and the surface cooler through electric power and control lines. The wind source heat pump host machine has the advantages of stability in working, small input power, high energy efficiency ratio, environmental friendliness, low noise, low manufacturing cost and convenience in installation. A medium to be condensed can be automatically supplied to a floor system in winter according to the instruction of an indoor controller; in summer, a medium to be evaporated is supplied to a top plate system corresponding to two indoor phase change heat exchange systems respectively. Floor heating in winter and top plate cooling in summer are realized.