Apildil acetate is an active peptide extracted from the mucosa of the small intestine. It is composed of 28 amino acid residues, which are arranged into a part glucagon and secretin, which can cause vasodilation and lower blood pressure. Starting from the hepatic artery, it has a strong ability to act on the splanchnic blood vessels, but has no effect on the femoral artery at all. It has a strong promoting effect on the secretion of intestinal fluid, but its promoting effect on the secretion of pancreas is very weak, and it can inhibit the secretion of gastric juice and the contraction of smooth muscle of the digestive tract.