Objective:To investegate the influencing factors of intraabdominal infectious complications after pancreatoduodenectomy(PD). Methods: The postoperative intraabdominal infectious complications occurrence rate and the influencing factors after PD in 196 patients in recent 7 years were retrospectively analyzed.Results:After PD,the rate of postoperative intraabdominal infections was significantly higher than the rate of other complications. The rate of intraabdominal infections in patients with near normal pancreatic remnent and with pulmonary infections were significantly higher than those in with harder pancreatic remnant and without pulmonary infections(P<0.01). Conclusions:The pancreatic remnant texture and pulmonary infections are the significant influencing factors of intraabdominal infections after PD.So attention should be paid to consider the condition of pancreatic parenchyma,and prevent and cure pulmonary infections to avoid the occurrence of intraabdominal infections as possible.