Straw baler is a machine that compresses, bales and packs crushed corn stalks. The machine has the advantages of compact structure, easy operation, stable and reliable transmission, and flexible maneuverability. It is used for green storage and dry storage of forage in animal husbandry. It can save storage space and prolong the feeding time of green straw. After the package is sealed, it will ferment naturally to produce probiotics, beneficial bacteria, lactic acid bacteria, and protein, so as to ferment naturally. It will be easily absorbed by livestock such as cattle and sheep after feeding, and the growth rate will be increased. 2%, which greatly reduces the cost of feed transportation and storage, and reduces the labor intensity of workers.