Points commonly used in the prevention of dementia include Hang Zhong, Bai Hui, Feng Fu, Si Shen Cong, Tai Xi, Ren Yu, and Shu San Li. Dementia is a disease characterized by stupidity, low intelligence, forgetfulness, etc. It is also called dullness disease. This disease is caused by insufficient endowment (poor innate constitution and function), phlegm obstruction, deficiency of liver and kidney (weak function of liver and kidney). The disease is located in the brain and is related to the dysfunction of the heart, liver, spleen and kidneys, and most of the lesions are characterized by a mixture of deficiencies and realities (both deficiencies and realities are present in the human body). The basic mechanism of the disease is the insufficiency of the medulla oblongata and the failure of the divine mechanism. Prevention and treatment can choose the head of Baihui, four Shencong, Fengfu and other points to wake up the brain and regulate the mind; kidney meridian Taixi point, bladder meridian kidney Yu point to tonify the kidneys to generate the marrow; the medulla will be hanging bells point to replenish and nourish the brain marrow, the brain and wisdom; stomach meridian foot Sanli and other acupuncture points to supplement the acquired in order to help the source of the birth of the marrow. Prevention of dementia can choose acupoint massage or acupuncture, etc., can also be through the regulation of emotions and moods, appropriate exercise, to participate in educational activities to prevent, acupuncture point selection and operation should be operated by professionals, should not be unauthorized choice of operation.