Mitral valve insufficiency is not usually self-healing and is a structural abnormality of the heart valve. Mitral valve insufficiency is usually diagnosed by cardiac ultrasound. It causes the mitral valve to fail to close completely during ventricular contraction, which can lead to abnormal blood flow to the heart, resulting in chest tightness, weakness, panic, shortness of breath, palpitations, and other symptoms. Congenital disease, trauma, inflammation, infective endocarditis, myocardial infarction, and aging mitral valve and mitral valve calcification in the elderly can cause mitral valve insufficiency, which usually cannot be cured by itself. However, mild to moderate mitral valve insufficiency can be treated without special treatment, while severe mitral valve insufficiency needs to be treated with prosthetic valve replacement surgery. Patients with mitral valve insufficiency should pay attention to regular review, low salt and low fat diet, avoid smoking and drinking, avoid emotional excitement and excessive fatigue and stress.