With the development of science and the improvement of human culture, people have begun to re-recognize the dregs from the perspective of nutrition. Research has proved that soybeans have a part of the nutrients remaining in the dregs, general dregs contain 85% water, protein 3.0%, fat 0.5%, carbohydrates (cellulose, polysaccharides, etc.) 8.0%, in addition, also contains calcium, phosphorus, iron and other minerals.