Corn gluten meal is the yellowish water of corn after soaking, crushing, degerming, removing dregs, and extracting starch, and then dehydrating to make a slightly red-yellow, protein-rich, slightly granular product. Corn gluten meal mainly contains gliadin and gluten, rich in amino acids and natural lutein. As an important protein source of compound feed, it can promote better digestion and absorption of some proteins digested in the rumen, and has high feed value. It is mainly used as a raw material for poultry, pigs, cattle, fish and other animal feeds to provide a source of protein.