Dihydropyridine, with the chemical formula C13H19NO4, is a veterinary growth-promoting additive. Dihydropyridine is a new multi-functional additive with certain functions of natural antioxidant VE, which can inhibit the peroxidation process of lipid compounds and form a liver protective layer; it can protect the oil, vitamin VA and carotene in the feed from being oxidized antioxidant effect. At the same time, it can also change the level of some hormones in the serum, promote the growth and development of livestock and poultry, improve the reproductive performance and the lactating ability of female animals, and enhance the immune function, and its metabolism is complete and almost no residue. In addition, dihydropyridine can significantly enhance the myoelectric activity of the small intestine, slow down the movement of chyme in the small intestine, and is beneficial to the digestion and absorption of the small intestine, thereby improving the utilization rate of feed.