1资料与方法1．1一般资料：资料来源于我站门诊人流室，从1995年7月～1997年7月，人流总数1868例，带环妊娠98例，带环妊娠占人流总数5．25％。年龄20～30岁66例，30～40岁25例，40岁以上7例。孕产次情况：与65例，23例，10例。1．2方法：带环妊娠诊断术前B超显示：宫内节育环 1 Materials and Methods 1.1 General Information: Data from the outpatient flow room I stand, from July 1995 to July 1997, the total number of 1868 cases, 98 cases of ring pregnancy, ring pregnancy accounted for the total number of 5.25 %. 66 cases were 20-30 years old, 25 cases were 30-40 years old and 7 cases were over 40 years old. Maternal frequency: with 65 cases, 23 cases, 10 cases. 1.2 Methods: diagnosis of pre-pregnancy with B-ultrasound showed: IUD