<正>Objective To explore the causes and management of intra-abdominal hemorrhage after orthotopic liver transplanktation ( OLT) . Methods Clinical data of 638 OLT patients were analyzed retrospectively from January 2004 to December 2008 in the First Affiliated Hospital of Sun Yat-sen University. The diagnosis and treatment of postoperative intra-abdominal hemorrhage after OLT were reviewed. Results Among the