Three feeding methods are used: chain feeding, crane feeding, and auger feeding. The chain feeding method can quickly and evenly distribute feed to each cage position, ensuring uniform feeding and maximizing the reduction of breeding operation costs. The crane feeding method, under the action of the flat feeder, can ensure uniform feeding and reduce investment costs compared to the chain feeding method; The reasonable feeding space for chickens allows for even feeding, the reasonable structure of the feeding trough prevents waste during feed feeding, the reasonable structure of the feeding gate reduces feed loss and damages to chickens, the reasonable driving adjustment mechanism accurately controls feed supply.