目的选择最适合的体位,以提高自然分娩率,降低剖宫产率,减少难产,提高产科分娩质量。方法产程中通过对临产妇半卧位分娩方式的观察,采用床头抬高35 cm左右的半卧位与临床常采用传统的仰卧截石位相比较。结果采用半卧位式分娩符合产道生理,使产轴和胎轴保持一致,有利于胎头入盆下降。结论半卧位分娩方式可促使产程进展。 Objective To choose the most suitable position to improve the rate of natural delivery, reduce the rate of cesarean section, reduce dystocia and improve the quality of obstetric delivery. Methods Through the observation of maternal half-lying delivery mode, the semi-recumbent bed elevation of about 35 cm was compared with the traditional practice of supine lithotomy. Results Semi-lying birth obeyed the physiology of the birth canal so as to keep the birth axis and the fetal axis consistent, which is favorable for the fetal head to fall into the basin. Conclusion Semi-recumbent delivery mode can promote the progress of labor.