Alzheimer’s disease is a progressive intellectual decline caused by diffuse brain atrophy and brain dysfunction. The onset of the disease is mostly after the age of 65, and the prevalence increases with age. The disease belongs to the categories of “dementia,” “literary dementia,” “good forgetfulness,” “depression” and “madness” in Chinese medicine, The disease belongs to the categories of “dementia”, “literary dementia”, “good forgetfulness”, “depression evidence” and “madness” in Chinese medicine. Epidemiological surveys of Alzheimer’s disease show that people with low education, smoking, women with reduced estrogen levels, hyperglycemia, hypercholesterolemia, hyperhomocysteinemia and vascular disease factors are prone to develop Alzheimer’s disease.