由于麻醉及手术的进步、胎儿监护水平的提高及各种社会因素的作用，我国剖宫产率不断上升［１］。但是剖宫产不是绝对无菌手术，特别是那些已具有潜在感染因素的产妇，如重度妊高征、妊娠合并糖尿病及心脏病、产前与产后出血、胎膜早破、产程异常、多次阴道及肛门操作、羊... Due to the progress of anesthesia and surgery, the improvement of fetal monitoring and various social factors, the rate of cesarean section in China has been on the rise [1]. However, cesarean section is not an absolute aseptic surgery, especially those who already have potential infection factors, such as severe PIH, pregnancy complicated with diabetes and heart disease, prenatal and postpartum hemorrhage, premature rupture of membranes, birth disorders, multiple Vaginal and anal manipulation, sheep ...