Currently on the market sold urine pregnancy test test paper, the principle of pregnancy test stick are qualitative detection of urine HCG positive, such as pregnancy test stick in the form of 2 red bars, that is, we usually say pregnant (1 negative, not pregnant). In other words, they can detect the egg and sperm meet to form a fertilized egg secretion of HCG (human chorionic gonadotropin), but the amount of secretion of HCG, the fertilized egg has no bed, bed in the uterus and outside of the uterus is not known, so the ectopic pregnancy can not be measured. Ectopic pregnancy patients have lower HCG levels than normal intrauterine pregnancy, but there is no standardized HCG value. It is difficult to judge ectopic pregnancy based on a certain blood HCG value, we need to continuously monitor the patient’s blood HCG value dynamically and quantitatively, if the multiplication time of blood HCG value is more than 7 days, the possibility of ectopic pregnancy is very high, if the multiplication time of blood HCG value is less than 1.4 days, the possibility of ectopic pregnancy is very low. Vaginal ultrasound, a type of ultrasound in which a long vaginal probe is placed into the vagina for examination, has a clearer field of view and more accurate diagnosis than transabdominal ultrasound. When blood HCG positive, ultrasound suggests intrauterine emptiness, one side of the adnexa detected an abnormal mass, which can be seen within the blood flow, or can see fetal buds and pulsation, can diagnose ectopic pregnancy; or ultrasound in the menopause of 4 weeks after the direct visualization of intrauterine sacs (transabdominal ultrasound in the menopause of 5-6 weeks after the direct visualization of intrauterine sacs), it can be clear that the intrauterine pregnancy, so as to rule out the possibility of ectopic pregnancy. Clinically, blood HCG value and vaginal ultrasound examination are usually combined to diagnose, when blood HCG>2000iu/l, vaginal ultrasound did not detect the intrauterine fetal sac, the diagnosis of ectopic pregnancy is basically established.