Ventriculoperitoneal (VP) shunt is a method used in the treatment of hydrocephalus. In this article, we report a four-year-old girl who was implanted a VP shunt due to hydrocephalus, and referred to our clinic due to dyspnea and cardiomegalia. Echocardiographic examination revealed cardiac tamponade and pericardial effusion. Thorax computed tomography, which was performed due to suspicion of migration of the VP catheter to the pericardium, showed that the VP catheter tip was inside the pericardium. Pericardiectomy was performed due to pericardial constriction was developed after tube drainage, and the VP shunt catheter was shortened and replaced into the abdominal cavity.