To adjust the biological clock, there is a nerve center in the brain that manages time, which is called biological clock. Middle-aged and elderly people should develop good living habits, work, study, activities, entertainment and diet should be regular, so as not to cause disorders and disorders of the biological clock of the human body, which will cause harm to health. Maintain a positive and optimistic mood, and try to keep a positive mental state in general. A happy mood is conducive to the coordination and unity of the nervous system and organs and systems, so that the body’s physiological metabolism is in an optimal state, thus feedback to enhance the vitality of brain cells, which is beneficial to improving memory. To develop the habit of physical exercise, for brain workers, exercise is of great importance. Because sports can regulate and improve the excitation and inhibition process of the brain, promote brain cell metabolism, so that brain function can be given full play, delaying brain aging. Maintain adequate sleep, the blood supply to the brain is relatively increased during sleep, which can provide sufficient energy for brain cells. When working, brain nerve cells are in an excited state, energy consumption, and will be fatigued after a long time. During sleep the brain cells are in a resting state and the consumed energy is replenished and restored. Therefore, it is necessary to maintain sufficient sleep time. Early prevention of cerebral blood supply deficiency: 1, timely treatment: the main is to improve cerebral blood circulation, can be used under the guidance of doctors vasodilator drugs and ginkgo biloba preparations. 2, early prevention: the prevention and treatment of cerebral insufficiency focuses on cerebrovascular, especially lipid and low-density lipoprotein increase to symptomatic treatment. 3, reasonable diet: usually eat more fresh vegetables such as onions, tomatoes, fruits, fish, black fungus, a small amount of vinegar, dry red wine, etc., can play an antioxidant role, delaying the occurrence of cerebral atherosclerosis. 4, appropriate outdoor activities: such as brisk walking, jogging, walking, etc., 30-40 minutes each time, at least 5 days a week, or playing tai chi, fishing, hiking, etc. 5, maintain a good state of mind and healthy brain: usually look at the TV, newspapers; do some manual labor or household chores; can also participate in some cultural and sports activities, such as singing, dancing, calligraphy, ball games, etc., temperament, enhance the brain thinking activities; avoid emotional excitement and excessive fatigue.