Alzheimer’s disease is a progressive neurodegenerative disease that occurs mostly in the elderly and has memory impairment as the main clinical symptom. There is no ideal treatment for Alzheimer’s disease, so early prevention is important. 1.Prevention against the onset of Alzheimer’s disease Many risk factors associated with Alzheimer’s disease are related to people’s usual lifestyle, so prevention of Alzheimer’s disease should start from middle-aged and young people. For example, they should develop good eating habits, rest habits and brain habits, and try to avoid some chronic diseases, including hypertension and diabetes, as well as controlling blood lipids and avoiding traumatic brain injury. 2, pay attention to nutrition, a balanced diet more consumption of three high (high protein, high vitamin, high fiber) and three low (low fat, low sugar, low salt) food, quit smoking, quit drinking. Reasonable arrangement of three meals a day, to ensure the nutrients required by the body, to prevent weight gain, and avoid the use of aluminum cookware, etc. 3, adhere to moderate exercise to slow down the aging of the brain Regularly do moderate aerobic exercise can improve the health of the circulatory system, promote sufficient oxygen supply to the brain and keep the brain cells metabolism vigorous. The movement of the hands is a benign stimulus to the brain, which can increase cerebral blood flow and meet the needs of the brain, so the elderly should move their fingers frequently. 4, emotional control, maintain a good state of mind The elderly try to avoid adverse psychological stimuli, learn to self-control and regulate emotions. Think about things, do not be happy with things, do not be sad with yourself, keep a normal heart. Mental youth is the best remedy for brain health. 5, the old have something to do, diligent use of the brain People should live to old age, learn to old age, use the brain to old age, in life continue to create. Older people should get out of the house and participate in more social activities. Usually read useful books and magazines, film and television programs, practice calligraphy, learn painting, or play games with others, play songs, also can learn computers, learn foreign languages, play intellectual puzzles and models, etc. 6, pay attention to the early signs of Alzheimer’s disease If you find memory loss, poor judgment, writing difficulties, speech disorders, personality changes, etc., you should consult a doctor as soon as possible.