Abstract: ［Abstract］〓Objective〖HTSS〗〓To identify the risk factors of postoperative pulmonary complications in patients undergoing laparoscopic pancreaticoduodenectomy（LPD） and further improve perioperative anesthesia management and reduce the incidence of postoperative pulmonary complications（PPCs）.
〖HTH〗〖WTHZ〗Methods〖HTSS〗〓A retrospective survey was undertaken on 100 patients underwent LPD operation. A total of 19 items of information such as gender, age, BMI, ASA classification, smoking, chronic obstructive pulmonary disease(COPD), hypertension, diabetes, coronary heart disease, liver functional grading, fraction of inspiration O2(FiO2), blood transfusion, intraoperative fluid volume, intraoperative warming, application of ulinastatin during operation, postoperative analgesia, ICU observation, operation time, postoperative hospitalization time were collected， and the risk factors for PPCs were analyzed.
〖HTH〗〖WTHZ〗Results〖HTSS〗〓Postoperative pulmonary complications occurred in 33 of the 100 patients, and the incidence was 33.0%. The rate of smoking, COPD, ICU observation, pure oxygen inhalation in PPCs group was higher than that in NPPCs group, ulinastatin application was lower in PPCs group, age was older and hospitalization time was longer in PPCs group, and the difference was statistically significant(P＜005). The multivariate logistic regression analysis displayed that smoking, COPD, pure oxygen inhalation were the risk factors of postoperative pulmonary complications in patients undergoing LPD.
〖HTH〗〖WTHZ〗Conclusion〖HTSS〗〓The preoperative history of smoking and COPD, pure oxygen inhalation in perioperative period were high risk factors of postoperative pulmonary complications in patients undergoing LPD.

Key words: pancreaticoduodenectomy, laparoscopes, postoperative complications, risk factors