Conclusion obstruction of biliary tract and counter-flow,mechanical injury, pancreas ischemia and Hypoperfusion,infection is the major etiological factor of postoperative acutepancreatitis.

• 结论胆道梗阻或逆流，机械性损伤，胰腺缺血及低灌注，感染是腹部手术后急性胰腺炎主要的发病因素。