There are four valves in every human heart. These are the aortic valve, which connects the left ventricle to the aorta, the pulmonary valve, which connects the right ventricle to the pulmonary artery, the mitral valve, which connects the left atrium to the left ventricle, and the tricuspid valve, which connects the right atrium to the right ventricle. They all act as one-way valves so that blood can only flow from one direction to the other without backflow. The mitral valve consists of an anterior (large) valve and a posterior (small) valve. The tricuspid valve consists of three leaflets: anterior, posterior, and septal. The aortic valve and pulmonary artery both consist of three leaflets. The valve leaflets are thin, smooth, and elastic when normal. Heart valve disease is actually not very clear to the majority of ordinary people, and we only have a concept: heart disease is dangerous. So, is heart valve disease dangerous? Heart valve disease is a very common heart disease, there are about one million valve disease patients in China, in all heart surgery, valve disease nearly 1/3. valve disease patients are mostly young adults, and young adults are the backbone of the family and society. Therefore, valve disease has an impact on the patients themselves and their families, and on society. Life depends on blood circulation, and blood circulation depends on the heart’s constant beating to ensure it. The heart is like a special “blood pump” that provides the power for blood circulation. In this special “blood pump” in the heart, there is a special structure, which ensures that the blood flows towards the front and prevents the blood from flowing backwards, it acts like a “one-way valve”. This “one-way valve” is what we call the heart valve, once the valve problem, it will make the blood flow resistance increased, so that the direction of blood flow disorder, from the face to increase the burden on the heart. Over time, it will produce heart failure and circulatory failure, directly threatening the life of the patient. In severe cases, this can lead to death. Heart valve disease is a functional or structural abnormality of single or multiple valve structures (including leaflets, annulus, tendon claim, or papillary muscles) due to inflammation, mucus-like degeneration, degenerative changes, congenital malformations, ischemic necrosis, trauma, etc., resulting in stenosis and/or incomplete closure of a valve. Severe dilatation of the ventricle and the heel of the main and pulmonary arteries may also produce relative insufficiency of the corresponding atrioventricular and semilunar valves. The mitral valve is most frequently involved, followed by the aortic valve. The disease most often occurs in young and middle-aged adults between 20 and 40 years of age, 2/3 of whom are women, and most have a history of rheumatic fever.