The utility model discloses a device for automatically feeding and clearing cow dung of a captive cow so as to solve the problem of non-uniformity in artificial feeding and breeding. The device comprises a standard control device, an industrial computer, an automatic feeding device of the captive cow and an automatic cow dung clearing device; the standard control device is connected with the industrial computer by a standard serial communication interface; and the standard control device is respectively connected with the automatic feeding device of the captive cow and the automatic cow dung clearing device. The device for automatically feeding and clearing cow dung of the captive cow improves automatic breeding level and adopts dynamic feeding; a weightless feeding weigher conveys the cow feed to each fodder feeding trough by belts; and a feed dividing system adopts a counter to control a cylinder to carry out feed dividing and stopping at the upper part of the belt moving conveyor, thus achieving balancing feeding, automatic feed stopping and feed dividing. The device for automatically feeding and clearing cow dung of the captive cow carries out automatic feeding and dung clearing by the industrial computer device, thus achieving the clean breeding, improving beef quality and expanding scale breeding.