Alzheimer’s prevention and treatment are as follows: 1, improve the diet: eat more fish and protein, fish protein is better and belongs to unsaturated fatty acids, appropriate supplementation of vegetables and fruits; 2, maintain a good social life: the incidence of elderly people living alone is relatively high, they should be encouraged to participate in group activities and team travel regularly; 3, adhere to moderate physical exercise: do outdoor exercises, such as tai chi, walking, are effective in preventing aging exercise; 4, maintain adequate rest and sleep: insist on reading, especially educational and simple interactive games, all of which can slow down the occurrence and development of the disease. Alzheimer’s disease is one of the common chronic diseases in old age and is a common disease that causes loss of daily living ability in old age, and the disease is becoming more common as we get older. Data from the 2016 White Paper on the Lost Status of the Elderly in China show that the number of lost elderly people nationwide is around 500,000 per year, with an average of about 1,000 lost elderly people per day, of which 72% of lost elderly people experience memory loss. Alzheimer’s disease, also known as Alzheimer’s disease, is the only one of the ten most common pathogenic diseases in the world that has no cure. Currently, drugs can only slow down the progression of the disease, such as cholinesterase inhibitors and antagonists of glutamate receptors. Risk factors associated with Alzheimer’s disease and people’s usual lifestyle are related, so prevention of Alzheimer’s disease should start at a young age, especially for families with a history of this disease, and should be done early.