Alzheimer’s disease is a primary degenerative encephalopathy that occurs in old age and pre-geriatric period. It is an impairment in memory, thinking, analysis and judgment, visual-spatial recognition, and emotion. Alzheimer’s disease is classified into four types in Chinese medicine: medulla oblongata, blood stagnation, phlegm obstruction, and spleen and kidney deficiency. Signs of Alzheimer’s disease: 1. Memory loss Forgetting everything that just happened, such as not being able to remember where to put things, forgetting what you have told others, saying that you did not eat even though you have just eaten, and not knowing that you have forgotten, thinking that it never happened. Mild dementia can show reduced ability to take care of household chores, or often make mistakes, such as forgetting to put salt in the stir-fry; moderate dementia can’t take care of life, can’t do household chores, can’t manage money, and even have difficulties in self-care; in severe cases, life is completely unmanageable and bedridden. 3.Orientation Often cannot say the specific year, month and day, say summer as winter, do not distinguish between morning and afternoon; cannot say the specific address of their home, door number, telephone number, etc.; severe dementia does not recognize family members, often call family members the wrong identity, etc. 4, personality change As the dementia elderly progress, personality change and behavior abnormalities become more and more prominent, appearing selfish and stubborn, indifferent to affection, rummage things, unhygienic, do not know shame and other phenomena. Therefore, when elderly people experience memory loss, daily living ability, orientation and personality changes, they should be examined early and followed up with attention to facilitate early detection of the disease and early intervention. Alzheimer’s disease daily prevention 1, diet should be low sugar, low salt, low fat, and should be rich in a variety of vitamins and trace elements, such as beans and their products, eggs, peanuts, walnuts, fish, lean meat, etc. 2, strict cessation of smoking, smoking is likely to lead to insufficient blood supply to the brain, brain tissue atrophy, leading to dementia. 3, drink less or do not drink strong alcohol, alcohol can make the reaction is slow to lead to dementia. 4, open-minded, optimistic, can slow down the aging of the brain. 5, avoid overwork and mental tension, do not lose temper, emotional stability. 6, sleep well, sleep deeply, 7-9 hours a day is appropriate to maintain brain cell vitality and energy.