People worldwide have reach a common consensus about labor duration for six decades. The labor curve which raised by Friedman has become a golden standard for labor administration in their daily work. But as the characteristics of modern delivery population change, the past labor duration has been questioned by many researchers and become incommensurate with the modern population. This article would summarize the progression of labor duration and the time of some labor intervention like admission time of low risk nulliparous, when to start injection of oxytocin in the labor dystocia and when to stop it in labor induction amniotomy and labor analgesia in hope to have a new understanding of when and what to do during our daily work under the circumstance of new labor standard.%六十余年来,国内外对产程时限的划分达成了共识,Friedman提出的产程曲线成为了全球大部分产科工作者进行产程管理的标准.但随着当今分娩人群的变化、产程中缩宫素使用、人工破膜、分娩镇痛等产程干预措施的实施以及临床研究方法的改进和完善,既往一直沿用的产程时限受到了众多学者的质疑并逐渐呈现出不适应当代分娩人群的趋势.因此,重新评估既有的并建立新的正常产程时限标准,对指导产程处理、减少不必要的产科干预具有重要意义.我国新产程标准的出台,更推进了相关产科干预措施实施的必要性探讨.回顾国内外不同学者对产程时限的研究,就低危产妇入院时机选择、缩宫素使用时机、人工破膜及分娩镇痛实施时机等方面进行综述,以期对新产程标准下产科干预时机有所认识.
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