Bean skin, also called soybean skin, is a kind of nutritious food. At the same time, it can be used as medicine to treat various diseases, reduce qi and reduce fever, moisten the intestines and relieve constipation, and can also be used for habitual constipation of human beings and constipation of children at ordinary times, as well as strengthening the spleen and regulating the stomach, and also has a good therapeutic effect on common diseases caused by diarrhea due to spleen deficiency.