300例产时宫颈水肿产妇,为单胎、足月、头先露、无头盆不称、无胎儿宫内窘迫者,随机分为研究组和对照组各150例。研究组平均年龄26岁,平均孕次1.7次,初产妇144例,平均孕周41周;对照组平均年龄27岁,平均孕次1.7次,初产妇143例,平均孕周40周。方法:研究组取膀胱截石位,常规消毒外 300 cases of labor-induced cervical edema of the mothers, single-born, full-term, first exposed, no head basin no longer known, no fetal distress, were randomly divided into study group and control group of 150 cases. The average age of the study group was 26 years old, the average number of pregnancies was 1.7, and the number of primipara was 144 in the average gestational age of 41 weeks. The mean age of the control group was 27 years old, the average number of pregnancies was 1.7 and the number of primipara was 143. Methods: The study group to take lithotomy bits, routine disinfection