脐带是胎儿与母体进行营养及营养物质交换的通道,脐带异常是造成围产儿死亡的重要原因之一[1],脐绕颈是脐带异常中最常见的一种,且发生率高。脐绕颈分娩时极易造成胎儿宫内窘迫、新生儿窒息及围产儿死亡,因此,每个产科工作者必须对脐绕颈这一妊娠及分娩期合并症有足够重视[2-3] The umbilical cord is the channel between the fetus and the mother for nutrient and nutrient exchange. Umbilical cord abnormality is one of the important causes of perinatal death [1]. Umbilical cord around the neck is the most common type of umbilical cord abnormality, and the incidence is high. Therefore, each obstetric worker must pay enough attention to the complications of pregnancy and childbirth during the umbilical cord neck. [2-3] The umbilical cord may cause fetal distress, neonatal asphyxia and perinatal death easily.