Mitral valve diseases are a frequent group of heart valve disease especially in our country and stenosis or insufficiency of the valve may occur. The disease may vary according to stenosis or failure. Surgical treatment of mitral valve disease is the repair or replacement of the lid. The repair surgeon is preferred on younger mothers who do not have a child, often in a manner that is not intact and the shape of the cover is appropriate. The removed mitral valve is replaced with a metal valve or biological valve.