Whether from the perspective of TCM health preservation or from the perspective of the curative effect of human body and water, it is very necessary. Old people who don't bathe often will accelerate the anti-aging ability of skin and muscle tissue of the elderly, which is called immune decline. Bathing the elderly can help or reduce their irritability and detoxification. It's good to bathe the old people sitting in the bathtub. Sitting bath can relax the elderly and reduce the potential safety hazards caused by bathing, such as breathlessness, dizziness and heartburn. The bathtubs used by the elderly are mainly bathtubs that can sit, bathe and open the door. It is also called sunset bathtub or sunset bathtub. The elderly try to choose the sunset bathtub, which is both safe and convenient. Bathing all the year round can reduce the pain of key muscles of the elderly, which is very helpful for physical maintenance and rehabilitation.