Drinking water system for sheep

The invention discloses a drinking water system for sheep. The system comprises a water tower, a filtering device, a water magnetizing device, an ultraviolet disinfection device, a water tank, a heating box body, heat preservation water troughs and a sewage purification tank, wherein the water tower is connected with the filtering device through a water pipe; the filtering device is connected withthe water magnetizing device through a water pipe; the water magnetizing device is connected to the top of the ultraviolet disinfection device through a water pipe, and the bottom of the ultravioletdisinfection device is connected with a water outlet pipe and separately connected into the water tank and the heating box body from the upper ends; the water tank is formed in the heating box body, and an electric heating tube is arranged between the bottom of the water tank and the bottom of the heating box body; one end of a heat preservation water inlet pipe is inserted into the water tank, and the other end of the hea