Dairy cow bed capable of reducing bacterial breeding and convenient to clean

The dairy cow bed comprises a positioning bottom frame, the top of the positioning bottom frame is rotationally connected with a lying plate, the two sides of the top of the positioning bottom frame are fixedly connected with bed guardrails, the inner wall of the positioning bottom frame is fixedly connected with a supporting frame, and the supporting frame is fixedly connected with the bed guardrails. A driving assembly is arranged in an inner cavity of the supporting frame and comprises a stepping motor installed on the outer side face of the supporting frame, and a driving screw is arranged in the inner cavity of the supporting frame. The supporting frame and the driving assembly are used in cooperation, so that the rear side of the lying plate can be lifted, then spread materials on the top of the lying plate can topple towards the front side, meanwhile, under the action of the limiting assembly, the stability of the positioning bottom frame and the lying plate in the using process is improved, and the pu