Ectopic pregnancy, usually referred to as tubal pregnancy, is when a fertilized egg for various reasons lays in the fallopian tube rather than in the uterine cavity. Ectopic pregnancy that aborts on its own is medically known as tubal pregnancy miscarriage and can be subdivided into complete and incomplete miscarriage; it is mostly seen in tubal pregnancy in the jugular region at 8-12 weeks of gestation (the most common type of ectopic pregnancy). Tubal pregnancy miscarriage may present with the following symptoms: sudden and severe abdominal pain after menopause, anal swelling, a little vaginal bleeding, and a mass in the abdomen. Let us first understand the mechanism of ectopic pregnancy miscarriage: because of the limited space and thin wall of the fallopian tube, the fertilized egg cannot form an intact meconium when it is planted in it, which restricts the growth of the embryo, so the embryo is easily stripped from the wall of the fallopian tube. If the embryo is completely detached from the wall of the tube and expelled into the abdominal cavity, that is, complete abortion of tubal pregnancy, the bleeding is usually not much, and the patient may feel severe abdominal pain suddenly, and there is often irregular vaginal bleeding with small amount and dark red or dark brown color; if the embryo is incompletely detached from the wall of the tube and part of the pregnancy tissue is still attached to the wall of the tube, that is, incomplete abortion of tubal pregnancy, which may lead to repeated bleeding from the wall of the tube, then the patient may feel severe abdominal pain, and there may be a feeling of anal cramping, nausea and vomiting, and even pain in the scapula and chest. In time, the hematoma formed adheres to the surrounding tissues to form an abdominal mass, which can be felt in the abdomen. It should be noted that the symptoms mentioned above are common to ectopic pregnancy and are not specific symptoms of ectopic pregnancy and its own miscarriage. Patients with these symptoms should seek prompt medical attention and monitor the trend of the blood HCG level dynamically, together with vaginal ultrasound examination. If the dynamic blood HCG value suddenly decreases or gradually decreases, and the ultrasound indicates the disappearance or reduction of the adnexal mass, which may be accompanied by abnormal echogenic masses detected in the pelvic and abdominal cavities, then ectopic pregnancy and miscarriage should be highly suspected. Because it is sometimes difficult to distinguish ectopic pregnancy miscarriage type from ectopic pregnancy rupture, when there is pelvic and abdominal fluid accumulation, it should be observed in the hospital, and the bleeding should still be treated surgically.