产力、产道和胎儿是分娩的三大要素。在分胎过程中三要素互相联系,互相影响、维持着一种错综复杂的动态平衡,使产程得以进展、分娩得以完成。先露的衔接、下降和宫口的扩张迅度则是产程进展是否顺利的两个标志。本文试图通过300例初产妇妊娠末期及分娩早期胎头衔接与否的临床分析,探讨初产妇妊娠末期及分娩早期胎头不衔接的临床意义。 Productivity, birth canal and fetus are the three major elements of childbirth. In the process of childbirth, the three elements are interrelated and influence each other, maintaining a complex and dynamic balance so that labor process can be improved and childbirth can be completed. The first sign of convergence, decline and the rapid expansion of the cervix are two signs of labor progress is smooth. This article attempts to 300 primiparae by the end of pregnancy and early fetal convergence of fetal head or not to explore the clinical significance of primiparous end of pregnancy and early delivery of fetal head does not convergence.