Objective To summarize the experience of diagnosis and treatment of postoperative bleeding after pancreaticoduodenectomy(PD).Methods Retrospective analysis was carried out to analyze the clinical data of 12 patients with postoperative bleeding after PD.Results Among 12 patients,2cases developed early hemorrhage and 10 patients got delayed bleeding.According to the site of bleeding,9 patients developed alimentary tract hemorrhage and 3 patients got abdominal bleeding.Three patients died and the mortality was...