目的：探讨米索前列醇的催产作用。方法：对６００例足月妊娠有分娩先兆的单胎头位产妇，随机分成米索组与催产素组进行催产效果研究。结果：米索组用药１２小时内阴道分娩率为７２２％，２４小时内阴道分娩率为９０％，２４小时内剖宫产率为４７％；催产素组则分别为８％、５４％及２４％。两组在对应指标上差异有极显著意义（Ｐ＜００１）。结论：米索前列醇用于足月妊娠催产，可明显缩短产程，降低剖宫产率，且使用简便，经济安全，副作用少，产妇易于接受。 Objective: To explore the role of misoprostol in oxytocin. Methods: A total of 600 single-head women with gestational tachycardia in term pregnancy were randomly divided into misoprostol group and oxytocin group for oxytocin efficacy study. Results: In the misoprostol group, vaginal delivery rate was 722% within 12 hours, vaginal delivery rate was 90% within 24 hours, cesarean section rate was 47% in 24 hours and 8% in oxytocin group, 54% and 24%. There was significant difference between the two groups in corresponding indexes (P <001). Conclusion: Misoprostol for term pregnancy induced labor can significantly shorten the labor process, reduce the rate of cesarean section, and easy to use, economic security, fewer side effects, maternal easy to accept.