Pectin is a polysaccharide polymer, widely found in green plants with fibers together with the role of binding plant tissues. Pectin is an acid-resistant gelling agent and completely non-toxic and harmless natural food additives, it is an excellent gelling agent, stabilizer, thickener, suspending agent, emulsifier. Adding a small amount of pectin can significantly improve the quality of food with good taste and fruit flavor. Used in the pharmaceutical industry, hypertension, constipation and other chronic diseases have certain therapeutic effects, and can reduce blood glucose, blood lipids, reduce cholesterol, lift lead poisoning, but also anti-cancer, anti-cancer and other effects. Made into medicinal capsules, it has good potentiation, and made into pectin bismuth is a good medicine for stomach diseases. Used in cosmetic industry, it can enhance the resistance of skin and prevent ultraviolet rays and other radiation. Pectin is usually rice-white to light yellow-brown powder, odorless, slightly sweet taste, and slightly sour, soluble in water.