The formula of root bean powder refers to the official Pharmacopoeia of Song Dynasty "Hutchison Fang Ju". Because it contains Chinese yam roots, red beans and white lentils, the merchants call it "root bean powder" according to this formula. The formula of root bean powder has been circulated for thousands of years, and countless classic therapeutic prescriptions have been produced on the basis of the formula of root bean powder. Its efficacy makes it always active in the diet of traditional Chinese medicine and the table aggravated by ordinary people.