The invention discloses an air conditioner system utilizing solar energy and a thermoelectricity supercooling device. The air conditioner system comprises a compressor, a four-way reversing valve, a condenser and an evaporator, wherein the input port and the output port of the compressor are separately connected with two connection ports of the four-way reversing valve; the condenser and the evaporator are separately connected with the other two connection ports of the four-way reversing valve; the air conditioner system further comprises a thermoelectricity supercooling device, a fan and a solar energy power system which is used for supplying power to the thermoelectricity supercooling device and the fan; the thermoelectricity supercooling device comprises thermoelectricity cooling fins, a thermoelectricity fin hot end radiator and a thermoelectricity fin cold end heat exchanger; the thermoelectricity fin cold end heat exchanger is connected between the condenser and the evaporator; the fan is on the same side as the thermoelectricity fin hot end radiator; the solar energy power system comprises a solar panel, a storage battery and a numerical control matcher which are mutually connected; direct current low voltage electricity of the solar panel is converted to 12 V direct current electricity through the numerical control matcher; and redundant electricity is stored by utilizing the storage battery.