Chinese medicinal bath (including fumigation, washing and moxibustion) has a long history as a health care and preventive therapy. Among the earliest 52 prescriptions in China, there is a method of herbal medicine bath. The great poet Qu Yuan's Yun Zhong Jun has the poem "Bath orchid soup and soak fragrant flowers". It can be said that medicated bath therapy originated from the Thai dynasty, developed in the Tang and Song Dynasties, matured in modern times, and has a history of 2000 years. The selection, formulation, processing and taking of drugs were studied and reformed in detail, and the curative effect was also scientifically judged. For example, many national patents are the products of this trend. "Fumigation therapy" is called "bathing in water" by the people, and it is also the first choice of Taoist health care treatment. According to the theory of traditional Chinese medicine, it is listed as the first of the eight methods in the outline of traditional Chinese medicine treatment, which proves the importance of sweating and dredging collaterals in preventing and treating diseases. After "Chinese medicine bath", sweating, cleavage warming, drug penetration stimulation, dredging acupoints, sweating all diseases, clearing heat and detoxifying; Expelling wind and removing dampness, eliminating pathogenic factors and strengthening the body resistance, relaxing muscles and tendons, dredging collaterals, inhibiting bacteria and detoxifying, regulating the balance of yin and yang, are helpful to treat both the symptoms and root causes and improve immune function. Fumigation and washing therapy is suitable for newborns from three days to the elderly, because it is administered from the body surface, non-invasive, painless, not absorbed by the gastrointestinal tract, not excreted by the liver, and has no toxic and side effects. 0- 14 years old is the most critical growth and development stage in life. During this period, many diseases can be solved by medicated bath, and it can also improve children's immune function and enhance their resistance, thus reducing the pain of taking medicine by injection.