Abstract： Compared with mitral valve replacement, there areseveral advantages in mitral valvuloplasty, so recently more and more sights are caught on mitral valve repair. According to different etiology, the surgeon can apply annuloplasty, triangular resection, quadrangular resection, replacement or transposition of chordae tendineae and so on to treat mitral regurgitation(MR). With the development of minimally invasive surgical technology, robotic mitral valve reconstruction evolve rapidly and percutaneous interventional therapy also commence from lab to bedside.We believe surgeons can repair MR safely and successfully in the majority of patients with proficiency in the basic techniques.