Mitral ring dehiscence is a rare clinical condition and may result in the recurrence of severe mitral regurgitation(MR). Echocardiography has a critical role in the diagnosis. In this case, a patient with prosthetic mitral ring dehiscence was evaluated with transesophageal echocardiography and demonstrative images have been obtained. Interestingly, two different MR jets, first one from the perimitral ring and the second one from the basal portion of the posterior mitral leaflet(PML) were present. Most likely, suturing of the mitral ring to the basal portion of the PML, which is an unexpected condition, caused to MR after the ring dehiscence