Laparoscopy for the diagnosis of ectopic pregnancy: This test helps to improve the diagnostic accuracy of ectopic pregnancy, especially in patients with early tubal pregnancy before rupture or miscarriage, and to differentiate it from acute abdominal disease of unknown origin. Laparoscopy is contraindicated in patients with massive intra-abdominal bleeding or with shock. In patients with early ectopic pregnancy, enlargement of one fallopian tube with a purplish-blue surface and no or a small amount of intra-abdominal hemorrhage is seen. Endometrial pathology: diagnostic scraping is now rarely relied upon to assist in diagnosis and is only indicated in patients with high vaginal bleeding with the aim of excluding intrauterine pregnancy abortion. Pathological examination of the uterine excretion or scrapings and the presence of villi in the section can diagnose intrauterine pregnancy; the presence of meconium only without villi can help diagnose ectopic pregnancy but not confirm the diagnosis.