臀位在正常分娩总数中约占4～5％,是胎位异常中较多见的一种。臀位经阴道分娩时其胎儿死亡率、罹病率(颅内出血、骨折、呼吸障碍等)比头位时都高,如何降低其发生是管理臀位的主要目的。教科书上记载发现异常胎位的方法就是产前检查。只有通过定期的产前检查才能及时发现和纠正异常胎位,提前确定分娩的处理方法。 Breech in the normal total number of births accounted for about 4 ~ 5%, is a more common fetal abnormalities. Breech vaginal delivery when its fetal mortality, morbidity (intracranial hemorrhage, fractures, respiratory disorders, etc.) than the head position are high, how to reduce its occurrence is the main purpose of managing breech. Textbook records found abnormal fetal position is the method of prenatal examination. Only through regular prenatal examination to detect and correct abnormal fetal position in a timely manner, to determine the delivery of treatment methods.