Objective To observe the clinical effect of mitral valve repair in the treatment of milral insufficiency in children.Methods Selected 135 cases of mitral valve plasty for mitral regurgitation children in department of cardiothoracic surgery,the Affiliated Hospital of Luzhou Medical College from March 2001 to March 2015,using echocardiography to observe mitral valve reverse flow before and after surgery and mitral valve with differeni composition and morphological changes of the structure.Results Operation s...