Yeast hydrolysate products contain large amounts of amino acids, small peptides, abundant B vitamins, glutathione, and nucleotides. Yeast hydrolysates hold good promise in the feed industry. First, yeast hydrolysates are rich in nutrients and can be used as supplements for amino acids, peptides, and B vitamins; Second, nucleotide species in yeast hydrolysates have important trophic effects on animals, especially juvenile animals. Nucleic acids have been shown to enhance immunity, promote cellular regeneration and repair, promote normal intestinal development in young animals, protect against oxidation and maintain a normal intestinal flora; In addition, inosinic acid and guanylic acid in the hydrolysates can be used as fresh flavor agents, and have a better application prospect in promoting animal feeding. Not a few enterprises apply the reaction after, the product can effectively reduce the dead panning rate of piglets, obviously improve the growth rate, various animals have been commonly used.