近年来异位妊娠发病率有上升趋势,但由于初诊的失误,有时可将小部分着床较晚或有异常症状与体征的早孕病人误诊为异位妊娠收治住院,本文对其原因分析如下。一般资料　我院1996年1月至1998年11月宫内妊娠误诊为异位妊娠共23例,年龄21～36y;月经周期:26～30d12例,≥30d9例,25d或 In recent years, the incidence of ectopic pregnancy has an upward trend, but due to the initial diagnosis of mistakes, and sometimes can be a small part of the implantation of early or abnormal symptoms and signs of early pregnancy misdiagnosed as ectopic pregnancy admitted to hospital, the reasons for this analysis is as follows. General information in our hospital from January 1996 to November 1998 intrauterine misdiagnosed as ectopic pregnancy, a total of 23 cases, aged 21 ~ 36y; menstrual cycle: 26 ~ 30d12 cases, ≥ 30d9 cases, 25d or