Rhubarb is a perennial plant of the Polygonaceae family and Rhubarb genus, distributed in Shaanxi, Southeastern Gansu, Qinghai, Western Sichuan, Yunnan, and Eastern Tibet. The main components of Rhubarb root that have laxative effects are anthraquinone glycosides and diacyanone glycosides. In addition, Rhubarb also contains fatty acids, calcium oxalate, glucose, fructose, and starch.