Konjac flour is mainly composed of glucomannan (KGM). It is a rare polymer. It is obtained from the extraction and separation of konjac tubers. It has super absorbent properties (absorbable water swelling 40-100 times), thickening, film forming, emulsifying, gelatinous, lipid-lowering and gastrointestinal cleaning. It is widely used in food, printing and dyeing, chemical industry, oil drilling and other industries. It is known as "Oriental magic powder". Konjac flour is a new type of dietary fiber. It is a pure natural green food with high molecular fiber. It contains 15 kinds of essential amino acids and anti-tumor mannan. The effect of weight loss is also particularly obvious. It can increase the sense of satiety without damaging the digestive system, reduce the absorption of thermogenic nutrients, and promote excess fat by regulating endocrine function and lipase activity