Chitosan is a substance extracted from a variety of precious herbs. Chitosan also has anti-aging, life-prolonging and anti-tumor effects, and has been widely used in clinical practice. For example, it prevents abdominal adhesions, has a good effect in promoting immunity, and can also be used as an injection infusion when mixed with saline. Chitosan can also play a role in lubricating joints and preventing osteomalacia. Chitosan, or chitosan, is also found in the cells of lower plants and algae, and is a compound of polysaccharides and immune activators, which has a significant regulatory effect on human immune function. Enhance the cell activity of macrophages, NK cells and other cells, enhance cellular immunity, and anti-cancer properties, can promote the growth of epithelial cells, promote the physiological repair of tissues and reduce the formation of scar. At the same time, it has the effect of local hemostasis and inhibition of fibrin formation, so it is a medicine with anti-aging and other effects.