本文回顾分析了1984年3月至1937年3月我院收治的284例过期妊娠。其发生率为4.69,6。对其中155例过期妊娠进行了产前监测。采用B超、24小时尿E_3、NST或CST、羊膜镜等方法。结果表明,B超正确率为82.64％;尿E_3可靠性为66.67％;NST(或CST)预测过熟儿是可靠的,但有假阳性,需反复测定并结合其它监护指标;羊膜镜可作为辅助监测方法。 This article retrospectively analyzed 284 cases of expired pregnancy admitted to our hospital from March 1984 to March 1937. The incidence was 4.69,6. Prenatal monitoring was performed on 155 outdated pregnancies. B ultrasound, 24-hour urine E_3, NST or CST, amniotic and other methods. The results showed that the correct rate of B ultrasound was 82.64% and the reliability of urinary E_3 was 66.67%. NST (or CST) predicted overmature children is reliable, but false positive, repeated measurement and combined with other monitoring indicators; amnioscopy can be used as Auxiliary monitoring methods.