Dementia primarily refers to Alzheimer's disease, which has a relatively high incidence rate. In China, among the elderly population over 65 years old, approximately 3% to 7% are affected; this rate can rise to over 20% among those over 85 years old. Suffering from dementia places a heavy burden on the patient, their family, and society. Initially, patients with dementia will experience a decline in memory function. As the condition progresses, there will be a decline in various cognitive functions. For example, spatial dysfunction might occur, such as getting lost on the way home, personality changes, and the emergence of psychiatric symptoms and other clinical manifestations.