Red beans can eliminate dampness and detoxify, and tremella can be used to treat lung heat cough, lung dryness and dry cough, irregular menstruation, gastritis, constipation and other diseases. Oats are rich in dietary fiber, which can promote gastrointestinal peristalsis, facilitate defecation, have low calories, low glycemic index, and reduce blood fat and blood sugar. Oats are also one of the advanced supplements and indispensable dry food in poor areas.