Clinically, the following methods are used to determine ectopic pregnancy: 1. Measurement of human chorionic gonadotropin. Human chorionic gonadotropin is a glycoprotein hormone synthesized and secreted by syncytial trophoblast cells. If the increase is not significant or even decreases, it indicates the possibility of ectopic pregnancy.2. Measurement of serum progesterone value. In a normal pregnancy, serum progesterone is usually above 20-25ng/ml. If the serum progesterone value is less than or equal to 5ng/ml, it indicates the possibility of ectopic pregnancy. 3. ultrasound examination, especially vaginal ultrasound, is very helpful in the diagnosis of ectopic pregnancy. ultrasound examination often indicates abnormal echogenicity in the adnexal area on one side and a dark area of fluid in the pelvis. 4. soreness, pain, distension and sudden tearing pain in one side of the lower abdomen. This is due to the gradual enlargement of the embryo as the pregnancy continues and the fallopian tube dilates passively, eventually leading to rupture.5. Anal cramping and scapular pain are due to the rupture of the fallopian tube, intra-abdominal bleeding, accumulation of blood into the rectal recess of the uterus and blood irritation of the diaphragm.