Alzheimer?disease, also known as Alzheimer?disease (?AD), occurs in old age and pre-mature old age and is the most common type of dementia in China, accounting for 60%-70% of all types of dementia. Alzheimer?disease is a degenerative disease of the central nervous system that often starts silently and continues to progress. The main clinical manifestations of Alzheimer’s disease are memory impairment, aphasia, loss of use, loss of recognition, impairment of visuospatial skills, executive function impairment, abstract thinking and computational impairment, and personality and behavioral changes. In China, the prevalence of Alzheimer’s disease is about 3% – 7% among people over 65 years old, and the prevalence increases gradually with age, with about 1/4 – 1/3 of people over 85 years old suffering from Alzheimer’s disease. Alzheimer’s disease may be a multifactorial group of diseases that often develop in response to multiple factors, including biological and psychosocial factors. There are many known risk factors for the development of Alzheimer’s disease, including age, family history, low literacy, poor economic status, smoking, dietary factors, lower estrogen levels in women, history of head trauma, hyperglycemia, and dyslipidemia. Alzheimer’s disease is not easy to cure, and when an elderly person has this disease, he or she will change his or her temperament and become irritable easily. At this time, children must be patient and attentive, and seek medical treatment as soon as possible, so that the elderly can enjoy their old age peacefully.