The duration of Alzheimer’s disease is usually 5-10 years, with a minority of patients surviving for 10 years or longer. Most patients die from complications such as pneumonia, urinary tract infections and decubitus ulcers. Alzheimer’s disease occurs most often in old age and pre-mature age and is characterized by progressive cognitive dysfunction and behavioral impairment as a degenerative change in the nervous system. Patients with Alzheimer’s disease exhibit memory loss, mainly in the form of recent memory impairment, forgetting things and people they do on a daily basis; along with memory loss, they may also exhibit more obvious behavioral and mental abnormalities, such as being prone to temper tantrums and silence; in severe cases, patients may exhibit emotional indifference, crying and laughing, or even spend their days speechless and bedridden. Early detection and treatment can effectively extend the survival time of patients, who may survive for 10 years or more. In Alzheimer’s disease, effective care can prolong the life of patients, improve their quality of life, and prevent accidents such as falling and going out without returning.