产后出血仍是当前导致产妇死亡的主要原因（1，2），我们于1994年11月～1997年5月，经脐静脉注射催产素的方法，对缩短第3产程、减少产后出血进行了观察研究，现报告如下。1资料与方法选择宫内孕39～41周无合并症之孕妇70例，均为当地农民，第1胎，年龄21～23岁，娩出脸儿在325 Postpartum hemorrhage is still the leading cause of maternal death (1,2). From November 1994 to May 1997, we injected oxytocin through the umbilical vein to observe the shortening of the third stage of labor and the reduction of postpartum hemorrhage Research, the report is as follows. 1 Materials and Methods Pregnant women with intrauterine pregnancy 39 to 41 weeks without complications were 70 cases of local farmers, the first child aged 21 to 23 years old, delivered a face at 325