The diagnosis of ectopic pregnancy is made mainly from clinical symptoms and auxiliary tests. The first one is menstruation. Patients with ectopic pregnancy are also pregnant, so they will have symptoms of menopause. In addition, many patients with ectopic pregnancy will have abdominal pain, which is more obvious on the pregnant side. Also, if the ectopic pregnancy leads to a miscarriage, there is usually a small amount of vaginal bleeding. Secondly, the location of the gestational sac can be seen by ultrasound and the diagnosis can be confirmed if the gestational sac is located bilaterally in the fallopian tubes or outside the uterine cavity. Thirdly, the progesterone result can also be used as a diagnostic aid. If the progesterone is below 15ng/ml, the probability of ectopic pregnancy is higher.