The indications for heart valve replacement surgery are as follows: 1, mitral stenosis: if the valve, leaflet activity is good, only junctional adhesions or mild subvalvular damage, closed dilatation surgery or support shaping surgery can be pursued. If the valve is calcified or has funnel-like changes, valve replacement surgery is required; 2, mitral valve insufficiency: if the mitral annulus is enlarged or the junction has limited leaflet curvature, surgery can be performed; if the leaflet perforation, tendon rupture, etc. are difficult to correct completely or if the surgery fails, mitral valve replacement surgery is appropriate. Most patients with mitral stenosis combined with mitral valve insufficiency need valve replacement; 3, tricuspid valve rupture: usually tricuspid valve does not do valve replacement surgery, only when the lesion is serious, valve replacement surgery can be implemented; 4, aortic stenosis: congenital aortic stenosis can often be implemented in adolescents with direct vision incision surgery; if it is middle-aged and elderly aortic stenosis, mostly congenital aortic valvular bivalvular malformation, in its If the aortic valve stenosis is middle-aged or elderly, it is mostly caused by congenital aortic valve diastasis and calcification on its basis, which requires the implementation of heart valve replacement surgery, the so-called aortic valve replacement surgery; 5, aortic valve closure insufficiency: if the aortic valve closure insufficiency can be caused by valve ring enlargement, tearing, perforation, curling or prolapse of the valve leaflet, etc., heart valve replacement surgery is usually required, and only mild dehydration of the aortic valve can be done for shaping surgery.