Alzheimer's disease(AD),a progressive neurodegenerative disease,is slow in the course.With the aging of the world's population,its incidence is increasing year by year.AD is the most common form of dementia,accounting for 3/5 of the dementia cases.It has become one of the main causes of death in the elderly today.At present,it is an unsolved problem in the medical field to develop drugs that can achieve long-term treatment of AD or even cure AD.In recent years,cholinesterase inhibitors have been used clinically to treat AD.In addition,as reported,some natural medicines such as huperzine A,ginsenosides,and Angelica polysaccharides can exert good therapeutic action.This article summarized the natural medicines with therapeutic efficacies on AD in terms of chemical components.