In terms of pancreatic fistula by trauma which was lately operated after 5 days, because of the effects of pancreatic juice, injuried pancreatic tissue was friable, decayed and the anastomosis had high risk of leaking if we made pancreatico-jejunostomy so we actively closed pancreatic duct (exocrine pancreas excluded). This patient suffered postoperative pancreatic fistula and healed after a month, no complication occurred, and this patient had no complaint about the symptoms of exocrine pancreatic deficiency.