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 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 osteophytes. Chitin, or chitosan, is also found in the cells of lower plants and algae, and is a compound of polysaccharides and immune activators that has a significant regulatory effect on human immune function. It enhances the activity of cells such as macrophages and NK cells, strengthens cellular immunity, and also has anticancer properties, promotes the growth of epithelial cells, promotes tissue physiology repair and reduces scar formation. It also has the effects of local hemostasis and inhibition of fibrin formation, so it is a medicine with anti-aging and other effects.