Valve and production method thereof

The invention provides a valve and a production method thereof. The valve comprises a support and a valve leaflet, wherein the support is arranged in the flexible valve leaflet. The valve produced by the method has the advantages that the valve is formed by a dip coating method to allow the valve leaflet and support to be integrally formed, long service life is achieved, the support does not directly contact with blood, a good anti-thrombus effect is achieved, the valve can have open area during production, sufficient open area is guaranteed, and the rejection rate of finished products is reduced. Compared with the prior art, the production method is simple in step, high in controllability and beneficial to the batch production of valves.