脐带是胎儿和母体间进行营养与代谢物质交换的通道。脐带的组织结构简单，但发生了组织结构改变或机械性受压，则可影响胎儿一胎盘循环，导致胎儿宫内发育迟缓、胎儿窘迫及死胎。因此，脐带因素对围产儿的影响广泛受到了重视。在脐带因素中，脐带扭转的发生率虽然低，但对围产 The umbilical cord is the passage between the fetus and the mother for the exchange of nutrients and metabolites. Umbilical cord tissue structure is simple, but the occurrence of structural changes or mechanical compression, it can affect the fetus a placental circulation, leading to fetal intrauterine growth retardation, fetal distress and stillbirth. Therefore, umbilical cord factors on the impact of perinatal attention has been widely. Among the umbilical cord factors, the incidence of umbilical cord twisting was low, but perinatal