Automatic drinking device for cattle

The utility model discloses an automatic water drinking device for cattle. The device comprises a base, a water inlet pipe and holding rods, a water storage tank and a drinking trough are arranged atthe top of the base; connecting water pipes are mounted in the centers of the bottoms of the water storage tank and the drinking trough in a penetrating manner; the water inlet pipe is connected to the outer wall of the water storage tank; a water control valve is arranged on the outer wall of the water inlet pipe; the holding rod is fixedly connected to the middle of the top of the protective cover, a positioning rod is fixedly installed at the edge of the bottom of the protective cover, a floating ball is arranged between the positioning rod and the inner wall of the water storage tank, a fastener is fixed to the outer wall of the joint of the protective cover and the water storage tank, and meanwhile a sealing piece is installed at the joint of the protective cover and the water storagetank. When the automatic