Ectopic pregnancy, as the name implies, refers to the implantation of the fertilized egg outside the uterine cavity, not within the uterus. Ectopic pregnancies most commonly occur in the fallopian tubes, accounting for about 95% of cases. Ectopic pregnancy is one of the common emergencies in gynecology and obstetrics, but its incidence is actually not high, approximately 2%-3%. However, because ectopic pregnancy is a leading cause of death in early pregnancies, it is quite alarming. In recent years, however, with the advancement of ultrasound technology, ectopic pregnancies are being diagnosed and treated earlier, significantly enhancing the survival rates and the ability to preserve fertility.