Heart valve disease, which is caused by structural destruction, fibrosis, adhesions, shortening, mucinoma-like degeneration, ischemic necrosis, calcium deposits or congenital developmental malformations due to inflammation of heart valves (including valve leaflets, tendons and papillary muscles), is heart valve disease. The disease occurs mostly in young and middle-aged people between 20 and 40 years of age. So what are the major classifications of heart valve disease? Common lesion classifications of heart valve disease: 1, mitral stenosis: If the valve leaflets are moving well, only junctional adhesions or mild subvalvular damage, closed dilatation or direct visualization angioplasty can be pursued. If the valve is calcified or has funnel-like changes, valve replacement surgery is required. 2, mitral valve insufficiency: mitral valve annulus enlargement or junctional confinement of leaflet curl can be pursued for direct visualization surgery. If the valve leaflet perforation, tendon rupture, etc., is difficult to correct completely or if the procedure fails, mitral valve replacement surgery is appropriate. In mitral stenosis combined with mitral valve insufficiency, most of them require valve replacement. 3, tricuspid valve damage: usually tricuspid valve does not do valve replacement surgery. Valve replacement surgery is performed only when the lesion is severe. 4, aortic valve stenosis: congenital aortic valve stenosis can often be implemented in adolescence with direct vision incision surgery, middle-aged and elderly aortic valve stenosis is mostly due to calcification on the basis of congenital aortic valve bivalve malformation. Aortic valve replacement surgery is required. 5, aortic valve insufficiency: aortic valve insufficiency can be caused by valve annulus enlargement, leaflet tear perforation, coiling or prolapse, etc.. Valve replacement surgery should usually be performed. Only mild prolapse of the aortic valve is possible to do the shaping surgery. 6, pulmonary valve lesions: mostly congenital anomalies, rarely require valve replacement, often requiring the implementation of a right ventricular-pulmonary artery diversion with a valved conduit. Relative contraindications to prosthetic heart valve replacement surgery: rheumatic activity uncontrolled or controlled for less than 3 months; heart failure combined with myocardial ischemic damage such as patients with advanced aortic stenosis. If cardiac function has improved, surgery is still sought. Patients whose liver or kidney function or general condition is too poor to withstand surgery. Patients with bacterial endocarditis who have developed sepsis and multiple infections should not undergo surgery.