Water inlet and outlet pipe emptier of solar energy heater

The utility model relates to a water inlet and outlet pipe emptier of a solar energy heater. When the temperature is lower, a water inlet pipe and a water outlet pipe of a water tank in the common solar energy heater is easy to block and crack by frosting, therefore, the solar energy heater can not be normally used. The water inlet and outlet pipe emptier can effectively prevent the water inlet pipe and the water outlet pipe of the water tank in the common solar energy heater from being blocked or cracked by frosting when the temperature is lower, comprises a cold water inlet pipe, a hot water outlet pipe and a hot water valve, wherein the hot water valve is fixed on the hot water outlet pipe; the water inlet and outlet pipe emptier is characterized in that the water inlet and outlet pipe emptier also comprises a water inlet and outlet pipe, wherein one end of the hot water outlet pipe and one end of the cold water inlet pipe are both connected with the water inlet and outlet pipe; and the other end of the co