The heart has four chambers, the left atrium, the right atrium and the left and right ventricles. There are four valves in the heart: the aortic valve, the pulmonary valve, and the tricuspid and mitral valves. The valves act like a one-way valve; they keep the blood flowing in the right direction. When the mitral valve is damaged, it causes an obstruction to the closure of the valve, disrupting the normal flow of blood through the heart and causing some blood to flow backwards from the left ventricle into the left atrium, which over time leads to heart failure and is life-threatening. This mitral valve lesion is called mitral valve insufficiency (or mitral regurgitation). The main treatments for mitral valve insufficiency are medical treatment and surgical treatment. The medical treatment: mainly cardiac, diuretic, vasodilator and other methods, are to improve the functional state of the heart. The vast majority of patients eventually need to undergo surgical treatment. Surgical treatment: Surgical treatment is divided into valve replacement and valvuloplasty. Mitral valve insufficiency now advocates valvuloplasty as the preferred surgical approach. Because valve repair and shaping has the following advantages: 1, the maximum preservation of the original valve, retaining its superior physiological and hemodynamic characteristics; 2, suitable for any age, do not have to face the risk of secondary surgery; 3, after surgery does not need to take long-term anticoagulant drugs, improve the quality of life after surgery, to avoid complications caused by long-term use of anticoagulant drugs. 4.For women with fertility requirements, they can have normal pregnancy and childbirth after surgery. According to the long-term follow-up results of mitral valvuloplasty abroad, “mitral valvuloplasty is now the most ideal surgical treatment for mitral valve insufficiency, and its long-term effect is much better than that of valve replacement. However, because mitral valvuloplasty is more complex than mitral valve replacement and has a high technical content, mitral valvuloplasty has not been widely performed in China, so many patients who could have undergone valvuloplasty had to undergo valve replacement.