Sanjiu protein peptide is a small molecular active polypeptide prepared by enzymatic method, which meets the production standards of nutritional products, has small molecular weight and is easy to absorb, and does not consume human energy when absorbed. Data show that peptide is an angiotensin converting enzyme inhibitor, which has the functions of enhancing immunity, lowering blood pressure and lowering blood lipid. The small peptides in Sanjiu protein peptide oral liquid can give full play to the physiological activity of peptides at this time, and play its role in lowering blood pressure and lipid. Its main mechanism is different from promoting cholesterol metabolism to produce bile acid, which does not hurt the kidney. At the same time, Sanjiu protein peptide can supplement the nutrients of protein synthesized in vivo in time, thus reducing the burden of insulin-secreting islet B cells and playing a good role in protecting B cells, especially suitable for diabetic patients with insufficient insulin secretion. This is enough to show that people with three highs can choose Sanjiu protein peptide with peace of mind if they want to eat.