Bath is a kind of immersion treatment of the human body in whole or in part with selected medical ingredients according to the physical conditions of a patient. Through the heating function of medicated fluid, it can reach the function of promoting metabolic effect without any burden on stomach or intestines. As a traditional external therapy of TCM, it has direct curative effect on various pain diseases, skin diseases and adiposity. In addition, it has good auxiliary curative effect on symptoms caused by cold factors, hypertensions, chronic diseases of obstetrics and gynecology and insomnia It can also ease stress, relive fatigue and can often be used for health preservation.