In the case of mitral valve insufficiency in the elderly, most of them are caused by valve fibrosis and calcification, and in the young, most of them are caused by rheumatic heart disease, coronary artery disease, congenital malformations, etc. Acute attacks are caused by diseases such as papillary muscle necrosis, poor recovery from prosthetic valve replacement surgery, and dehiscence. If mitral valve insufficiency is prolonged, it can lead to heart function decline and requires early hospitalization and active treatment with a physician. If it is mild, the patient will have mild dyspnea, mostly after exercise or exertion aggravated weakness, chest pain and other symptoms, at this time can be treated with oral cardiac, diuretic, vasodilator drugs. Patients with more serious conditions need regular hospital treatment, doctors will take injections of cardiac drugs, such as digitalis, to improve the situation to oral drugs, need to be accompanied by vasodilator drugs for treatment. If the condition is serious, surgery should be considered to perform valve replacement to avoid acute left heart failure and even death by shock.