不典型异位妊娠容易误诊。本文报告5例不典型异位妊娠,并讨论了其误诊的原因。指出:不典型的月经史是误诊的主要原因。本文评价了异位妊娠的各种辅助诊断方法,后穹窿穿刺简便、可靠,是很好的诊断方法;腹腔镜检查有助于确诊早期宫外孕,但目前国内尚不能普遍推广。 Atypical ectopic pregnancy easily misdiagnosed. This article reports 5 cases of atypical ectopic pregnancy, and discusses the causes of misdiagnosis. Pointed out: atypical history of menstruation is the main reason for misdiagnosis. This article evaluates various auxiliary diagnosis methods of ectopic pregnancy. The posterior fornix puncture is simple and reliable and is a good diagnostic method. Laparoscopy can help confirm the early ectopic pregnancy, but at present, it is still not universally available in China.