Abstract: China is in the transformation period of large-scale farming. Large-scale farming can concentrate and rationally use resources and achieve better returns. To achieve large-scale farming, it cannot be achieved without the combination of automation technology and farming technology. In this paper, PLC is used as the control core to control the feeding truck automatically to each trough, automatic feeding, and combined with the display, to achieve the monitoring of feeding process, constitute a complete set of intelligent feeding system.