Left ventricular pseudoaneurysm (LVPA) is a rare but lethal complication of mitral valve replacement (MVR) or myocardial infarction. Early correction is necessary for patients with extensive and expanding LVPA. We report a transcatheter closure of LVPA after MVR. A 63-year-old woman presented with an LVPA two months after MVR. The repeated computed tomographic scan and transthoracic echocardiography showed enhancement of pseudoaneurysm. The LVPA was successfully closed with Amplatzer Vascular Plug by transcatheter approach.