Aortic regurgitation is the backward flow of blood from the aorta into the left ventricle through an incompletely closed aortic valve. The main causes are atherosclerosis of the aorta and high blood pressure in the elderly, and when symptoms are mild, medication may provide relief. Control of hypertension is crucial as it can exacerbate the degree of regurgitation. Hypertension can also promote aortic coarctation when accompanied by dilatation of the ascending aortic root. It can be treated with angiotensin-converting enzyme inhibitors such as captopril and enalapril, which can prevent or delay left heart enlargement, reverse left ventricular hypertrophy, and prevent myocardial remodeling. Rheumatic and the vast majority of other causes of aortic valve closure insufficiency, if the long-term occurrence of aortic regurgitation, easy to cause the left heart load, can cause heart failure, but also can cause the peripheral blood supply insufficiency. This type of disease is generally poorly treated with medication, and if it is to be completely cured, it can only be treated by surgical artificial replacement of the heart valve.