Alismatis Rhizoma is a traditional Chinese medicine.It has a long medicinal history and is widely used in clinical practice.It has the functions of promoting diuresis,eliminating dampness,removing turbidity and lowering blood fat.The chemical components of Alismatis Rhizoma mainly include triterpenoids,sesquiterpenoids,phenylpropanoids,diterpenoids,sugars and volatile oils.The pharmacological effects of Alismatis Rhizoma mainly include diuretic,anti-tumor,anti-inflammation and lipid regulation,and it has good therapeutic effects on diabetes,liver disease and osteoporosis.This article reviews the research progress on the main chemical components and pharmacological effects of Alismatis Rhizoma,in order to provide a reference for further research,development and clinical application.