Corn peptide is a limited hydrolysis product of corn protein and one of the main by-products in the processing of corn starch. Corn protein can be hydrolyzed by corresponding protease to produce short peptide molecules with small molecular weight but high activity, that is, corn peptide. Corn peptide contains special amino acids, such as glutamic acid, proline, leucine and alanine, hydrophobic amino acids and so on. Corn peptide is rich in nutrients, including amino acids and protein, which are easily absorbed by the human body after eating, and has a good effect on hangover and blood pressure reduction.