头位难产占分娩总数的 2 3 98% ,占难产总数的81 6 3% [1] 。除明显的骨盆狭窄外 ,头位难产很难在产前明确诊断 ,绝大多数的头位难产都需要经历一段产程后 ,才逐渐表现出来。因此 ,及早识别头位难产的征象 ,查明原因 ,作出正确的处理 ,使其向顺产方向发展 ,则能降低头位难产发 Head dystocia accounted for 23 98% of the total number of deliveries, accounting for 81 6 3% of the total number of dystocia [1]. In addition to obvious pelvic stenosis, the first bit of labor difficult to confirm a clear prenatal diagnosis, the vast majority of head dystocia need to go through a period of labor before they gradually show. Therefore, the early identification of signs of dystocia at the head, identify the reasons and make the correct treatment to make it to the direction of birth, you can reduce the head dystocia