Dementia is one of the most common neurodegenerative diseases among the elderly and is a disease characterized by cognitive decline, behavioral and personality changes. It is characterized by impairments in memory, abstract thinking, orientation, and emotion, accompanied by decreases in social mobility and ability to lead a life. The incidence of Alzheimer’s disease is directly proportional to age. As the birth rate declines and average life expectancy increases, there is a worldwide aging of the population, and it is expected that the elderly population in China will exceed 200 million in 2015, and may exceed 400 million in the late 1940s of this century. The incidence of Alzheimer’s disease has been increasing year by year with the progress of population aging, and the epidemiological survey data on the prevalence of dementia in countries all over the world since the 1980s show that the prevalence of dementia in the elderly over 65 years old is 4% to 7%, and the prevalence of dementia in the elderly over 80 years old can be up to more than 20%. The lower the level of education, the higher the incidence of the disease. From the development trend of Alzheimer’s disease, this disease not only seriously threatens the health and quality of life of human beings in their old age, but also brings a heavy burden to the society and the family, which urgently needs to find an effective way to reduce the incidence of dementia. 1, to fully understand the AD and its harm Medical science generally divided AD into two levels, that is, mild, moderate and severe. Cognitive function performance is the core neuropsychopathological manifestation of dementia, as follows: (1) Memory continues to decline. At the beginning of the newly acquired knowledge of things, said the words turn around and forget, due to the inability to remember things, the patient can make up stories to fill in the missing memories, (2) visuospatial impairment is one of the early signals, such as in the home, but can be a bout of disorientation, will be the A place as the B place; (3) intellectual level continues to decline, and in severe cases, even can not do the addition and subtraction of within ten; (4) self-care ability to significantly reduce life. This is because patients often appear to be unable to use everyday objects, and even getting dressed may be impaired, but it is not due to limitation of limb movement or lack of physical strength. China’s economy is underdeveloped, and the elderly welfare system and social medical insurance system are not yet perfect. Most patients are cared for at home by family caregivers.The burden of caregiving for AD patients can directly affect the mental health of relatives, which in turn aggravates the family economic crisis. Caring for the patient leads to a reduction in the social activities of the relatives, sometimes conflicting with their other roles, such as parents, spouses, etc., resulting in the family relationship being in conflict. Spouses are sometimes in conflict with their other roles, such as parents, spouses, etc., resulting in tensions in family relationships and interpersonal relationships. Family members often lack relevant knowledge and common sense of patient care, and it is difficult to cope with the patient’s suspicion, aggression, delirium and other psychiatric symptoms, leading to gradual deterioration of the condition, which seriously affects the patient’s quality of life. Therefore, AD will bring a heavy burden to the family and society. 2. Clinical manifestations (1) Memory impairment firstly, the near memory is damaged, and the things just done or words said cannot be remembered, and gradually the far} memory is also damaged. Eventually, it can be so serious that even names, birthdays and family size are completely forgotten, often accompanied by impaired ability to calculate. Along with memory deficits, there may be f{{present disorientation. For example, they do not recognize the route home after leaving the house, and they cannot find the bed they sleep in after going to the toilet. (2) Behavioral abnormalities begin with childish clumsiness, often ineffective labor, and later aimless labor. For example, rummaging through the cupboards, putting things in disorder, being busy, not knowing what to do, and collecting wastes. Do not talk about the guard cow, poorly dressed, strange behavior, some appear to interfere with public order, affecting social security. Some are dull as a log. Late bedridden, incontinence, life can not take care of themselves. (3) Emotional disorders may be childish, or childlike, easily provoked. Some patients have dull expression. (4)Appearance change: the patient’s appearance is aging compared with his/her peers, salivation, ambiguous words, frequent head shaking, hobbling gait, finger trembling and difficulty in writing. (5) Neurological dysfunction is rare and mostly occurs in the late stage. Involuntary movements of the mouth and face, increased muscle tone, tremor, strong grip reflex, automatisms and stereotyped movements. 3, diagnostic features (1) the awareness of the consultation is weak with age, memory loss, and even dementia symptoms, patients and their families often laugh it off, called “old charcoal”. Even patients with complete dementia, life can not take care of themselves, only to attract attention. (2) The cause of the disease is not yet known is generally considered to be a multi-morbidity disease. Primary etiology may be related to heredity, poisoning, viral infection, autoimmunity, etc. Secondary etiology may be caused by extracerebral hemorrhagic disease. Secondary etiology can be caused by extracerebral diseases. For example, cerebral arteriosclerosis, alcoholism, cerebral infarction, endocrine metabolic disorders. (3) Early diagnosis is difficult to dementia pathological changes in the 30s and 40s have existed, at this time people due to the young and strong, lack of sufficient attention, thus missing the onset of the best treatment opportunities. 4.Take active preventive health care measures The key to prevention and treatment of AD lies in early detection and early intervention. Social medicine preventive health care should focus on these two aspects of the work. Due to the slow onset of AD, the course of the disease is progressive, the cause of the disease is still unknown. There is no specific treatment, and the overall prognosis is poor. Therefore, the focus should be placed on preventive health care. For the elderly who are accustomed to the importance of treatment but not prevention, and who are accustomed to taking medication to be considered treatment, there seems to be no significance of seeking medical attention. And because of the deep-rooted traditional concepts, some of the elderly people are afraid of medical treatment, and even more reluctant to listen to people say AD, that people are forgetful in old age is normal. In fact, AD, like other diseases, can be prevented and treated, and early prevention is a priority. Therefore, the significance of community preventive health care is very significant, the prevention and treatment of AD into the community health service system is a proven method. The prevention and treatment of AD should be early detection and early intervention. AD patients and their families should be on-site health education and publicity and rehabilitation guidance, the main intervention content: (1) Repeatedly to the AD patients and their families to publicize the knowledge of prevention and treatment, detailed explanation, and strive to understand and master. (2) psychological and emotional support: ① patiently listen to patients and their families, establish a good doctor-patient relationship, to obtain the trust of patients; ② according to the patient’s personality traits of health education, comfort, encouragement, enlightenment; ③ full understanding of the patient’s attention to the patient, so that he or she can feel the warmth of the family, respect for the patient’s ___ personality and self-esteem, do not think that the patient is stupid, so he or she reprimanded, ridiculed, and make him or her psychologically hurt; ④ Encourage patients to participate in family social activities within their ability to promote mental health, such as raising fish, planting flowers, reading books, reading newspapers, listening to the radio, watching TV, etc. to distract their attention, dispel bad moods, arouse confidence in life, and make them feel the joy of life and their own value; increase cultural and sports activities, such as playing poker, chess, ball games, symposiums, etc. to increase communication. Improve communication ability, cultivate good feelings and slow down the progress of the disease. (3) Rehabilitation training guidance: ① Memory impairment: strengthen recent memory, increase the frequency of information stimulation, and help patients recognize their surroundings and relatives and friends. Often remind the date, address, work unit. The patient should be reminded of the date, address, work unit, main building signs, home phone number, etc. Stabilization of distant memory, encourage patients to recall forgotten things, especially the most interesting, important or honorable things in life, family members can also remind to help recall, to be relentless. ② Daily life training: choose the daily life contents that patients are familiar with and closely related to daily life for training, such as cooking, eating, dressing, washing, bathing, tidying up the room, etc., repeat the narration and let them simulate it, and try to let the patients take care of themselves. The content of daily life can be written on a piece of paper and carried around in the chronological order of occurrence, not done. Cross out 1 item and repeat the training. ③Improve cognitive impairment: develop individualized functional training program, training arrangement of numbers and simple numerical operations, from animals, plants, objects, food and other items of the day, choose any one of them. From animals, plants, objects, food and other items, any one of them let the patient say the same kind of things and classify them; organize patients to participate in appropriate group activities, and pay attention to the progress of the patients in the movement to encourage them in time and enhance their self-confidence to promote the recovery of language, computation, judgement and comprehension; for the delusional patients, they should have a kind attitude, pay attention to the speaking skills, avoid touching the delusional content, and divert the attention of the well. Physical training: according to the physical condition of patients, choose suitable physical training programs, such as walking, doing geriatric health exercises, dancing, playing ball games, etc., to the extent that there is no discomfort. ⑤ Safety protection measures: avoid going out alone for patients who are easy to get lost, and design cards for patients to carry with them, which indicate the patient’s name, home address, contact number, diseases and allergy medications to prevent accidents, and those who have difficulty in moving should be accompanied by someone; teach the patients how to prevent falls, and don’t let the floor of the house be too smooth, and arrange things in an orderly manner, and press handrail on the wall if necessary; prohibit the use of gas alone to prevent accidents caused by leakage. The use of gas alone is prohibited to prevent accidents caused by leakage. When taking a bath, help the patient to adjust the water temperature, and put the hot water bottle out of the patient’s reach to prevent scalding; medicines and scissors should be properly placed to avoid accidental ingestion or self-inflicted injuries. (4) Dietary guidance: quit smoking and spilling, avoid overeating, eat three meals at regular intervals, reasonably according to whether or not they suffer from other diseases, and eat more nutritious lecithin-rich food for brain cells. Chinese medicine in the prevention of this disease has a unique 1, drug prevention of human beings have been exploring health care, anti-aging and preventing aging, prolonging life. According to the theory of Chinese medicine, the essence of aging in the elderly is yang deficiency and blood stasis. In the past 10 years, the domestic carry out a large number of experimental research on anti-aging Chinese medicine prescription, these prescriptions in 89.5% to supplement the spleen and kidney-based, so the elderly Yang deficiency can always take the spleen and kidney products, such as five diffraction of the Zong pill and so on, can prevent aging. 2, moxibustion prevention moxibustion can also support the Yang stasis, prolong life, moxibustion of the Shenque, Qihai, Guanyuan, the Vitality of the Vertical Chakra, large vertebrae, anointment of the Vertical Chakra, Kidney Yu, Zhi room, gastric meridian of the foot Sanli points (double), each time moxibustion of the five strong, all have to tonify the kidney to fill the essence of the yang to prevent the aging and the prevention of the dementia of the effect. 3, to avoid cerebral arteriosclerosis and cerebral thrombosis and other diseases of the hair cattle to prevent dementia caused by insufficient blood supply to the brain. Arteriosclerosis is the main “enemy” of dementia, regulate diet, eat less salt, and carry out appropriate physical activities to help prevent arteriosclerosis. 4, pay attention to intellectual training, diligent brain to delay brain aging. The proportion of people who suffer from dementia is high when they have nothing to do and use their brains less. Elderly people should maintain vitality and use their brains more, such as reading more books, learning new things, cultivating hobbies, and making extensive contacts with people from all walks of life. Talking with friends, playing mahjong, chess, etc., can stimulate the vitality of nerve cells to prevent brain aging. 5, mental health care people often say: “Smile, ten years less”, which indicates that the mental health care focuses on regulating the seven emotions, pay attention to maintain optimism, should be section of thought, to worry, prevent panic. To be serene and fearless, calm and indifferent to the world, contented, and indifferent to desire. Do not be tempted by material desires outside, do not store the emotional excitement within, so that the blood and qi harmonization, health does not fail. Pay attention to maintaining interpersonal relationships to avoid long-term depression and depression, because depression is also a risk factor for dementia. Avoid mental stimulation to prevent damage to brain tissue function. In addition. Maintaining family harmony can maintain a happy mood and enhance the ability to resist disease. 6, physical exercise many people know, exercise can reduce the chance of stroke, in fact, exercise can also promote the production of nerve growth factor, to prevent brain degeneration. Practice has proved that appropriate physical exercise is beneficial to health, such as insisting on walking, playing tai chi, doing exercises or practicing qigong, etc., which is conducive to the lifting of the brain’s inhibitory function and improving the activity level of the central nervous system. However, it is necessary to progress step by step, according to one’s ability and perseverance in order to achieve the desired effect. In addition to holistic whole-body activities, try to move your fingers as much as possible. 7, living and eating, living and eating should be regular, not erratic. Generally should go to bed early and get up early, eat regularly, defecate regularly. Attention to keep the bowels smooth for the prevention of dementia also has a positive significance. In the diet, generally pay attention to the following points: ① emphasize to do “three fixed, three high, three low and two quit”, namely, fixed time, fixed quantity, fixed quality, high protein, high unsaturated fatty acids, high vitamins, low fat, low calories, low salt and quit smoking, quit drinking; ② avoid the use of aluminum tableware, aluminum, aluminum into the body, the first deposition of the brain, inducing Alzheimer’s disease; ③ supplement beneficial minerals and trace elements, the lack of essential trace elements (such as zinc, etc.), can lead to insufficient blood supply to the brain, causing vascular lesions, resulting in dementia hair cattle. Can also be appropriate supplement: vitamin E, daily supplement 400 units of vitamin E, help to prevent dementia. With the rapid development of China’s economy and people’s quality of life is improving, life expectancy is increasing year by year. China has entered an aging society, and AD patients are increasing year by year. With the establishment and improvement of the community health service system, the prevention and treatment of AD into the community health service, you can prevent and control AD from the source, can optimize the health resources, reduce the cost of treatment and care, reduce the economic burden of the social family; and can be individualized medical care services. It can also improve the survival quality of AD patients and slow down the disease process.