1. General care: Keep the bed clean and dry, and place commonly used items in an easily accessible place so that patients can use them at any time; pay attention to safety and prevent trauma caused by falls; pay attention to keeping warm, preventing colds, infections and bed sores. For the rehabilitation of patients with dementia, specific measures should be taken to ① Strengthen the training of daily living skills so that they can take care of themselves as much as possible. For example, washing the face, cleaning the teeth, going to the toilet, etc. (2) Implement appropriate medical activities: arrange reasonable and appropriate medical activities, starting with simple movements and light housework, so as to improve the patient’s confidence in survival and reduce anxiety, which can promote his or her health. ③Appropriate physical exercise, such as walking, health exercises, qigong, taijiquan, etc. ④Let patients participate in social activities appropriately: try to make more contact with the society and keep in touch with the society to slow down the progress of the disease. ⑤ Appropriate application of anti-anxiety and antidepressant drugs. ⑥Language training: for patients with aphasia and dysarthria, symptomatic training can be conducted; for those with stuttering and vocal disorders, motor training of lip, tongue and soft palate articulation organs should be conducted. (7) The family atmosphere of dementia patients should be harmonious, so that family members can establish a sense of responsibility and obligation, and they should be skilled in dementia care for safe health care. Prevention of Alzheimer’s disease should start with middle-aged and young people. Many risk factors related to Alzheimer’s disease are related to people’s usual lifestyle, so prevention of Alzheimer’s disease should start with middle-aged and young people, such as developing good eating habits, rest habits and brain habits. Try to avoid suffering from some chronic diseases, including hypertension and diabetes, and should control blood lipids and avoid traumatic brain injury; in addition, depression is also a precursor of dementia, so it is also important to control and regulate emotions. Alzheimer’s disease has a certain degree of heredity, so if you have a family member with dementia, your offspring should take precautions from your middle age. Once significant memory loss is detected, regular checkups should be conducted in hospitals for early intervention to avoid further brain damage. The problems brought by the current aging population involve all aspects of social life. Vigorously creating a culture of respecting, aging and helping the elderly in the whole society will reduce the occurrence of dementia. In short, it is necessary to have a comprehensive and balanced, scientific and reasonable adherence to activities, to live a regular life, to be emotionally optimistic, to quit smoking, to drink less, to be hygienic, to exercise properly, and to achieve early detection, early prevention and early health care. 2.Supervise dementia patients to carry out intellectual exercise Often let the patient to some pictures, objects, words for the regulation and classification, do synthesis and analysis ability training; let the patient answer questions, training understanding and expression ability; help the patient to develop life work and rest schedule, let the patient take the initiative to care about the date, time change; more training, encourage patients to participate in a variety of interest activities – -planting flowers, raising fish, raising birds, planting, caring, observing all need to have the participation of memory and beneficial to physical and mental health. 3.Promote the slowdown of cognitive function To actively prevent and control chronic diseases of the elderly; maintain a good mood; regular life; reasonable allocation of meals; brain massage, educational finger exercises, music therapy, etc. to improve the function of the brain, prevention and treatment of dementia have a very good effect. 4, food therapy Commonly used are walnut, lotus seeds, sesame, peanuts, yellow flowering vegetables, dates, mulberry seeds, cinnamon meat, grapes, lychees, pine nuts, hawthorn, mushrooms, eggs, soybeans, fungus, yams, sea cucumbers, etc.