Self-expanding bioprosthetic valve

The invention discloses a self-expanding bioprosthetic valve. The self-expanding bioprosthetic valve comprises a fixing support, an inflow end supporting structure, an outflow end supporting structure and a silica gel suture ring. The fixing support comprises a stretching part which is broken after being subjected to expansion force, and then the valve automatically expands at the preset position. In the unfolded state, the inflow end supporting structure and the outflow end supporting structure extend outwards relative to the fixing support in the radial direction and are used for supporting the valve at a preset position and continuously exerting outward and/or downward force on surrounding tissue, and reliable fixing of the valve is guaranteed. According to the valve, the valve can be replaced without complex suture, the operation time is shortened, the risk of complications generated after an operation is reduced, and due to the ingenious design, the valve support can be rapidly released and reliably fixe