Ectopic pregnancy should technically be called ectopic pregnancy, normal pregnancy occurs in the normally developed uterine cavity, while all other parts of the pregnancy are called ectopic pregnancy. We generally know that ectopic pregnancy is a very dangerous emergency, serious life-threatening, this is just a manifestation of ectopic pregnancy, typical ectopic pregnancy is mainly manifested as menopause, abdominal pain, vaginal bleeding irregularly, according to the increase of intra-abdominal hemorrhage may appear dizziness, cold limbs, nausea, fainting and other shock manifestations. With the improvement of sensitivity of pregnancy diagnosis technology and the enhancement of women’s awareness of self-care, we can make a diagnosis earlier and earlier, ectopic pregnancy may also appear in the following atypical situations, easy to be ignored or misdiagnosed: First, without any self-awareness of the symptoms, but the pregnancy test is positive, and ultrasound shows that there is no gestational sac in the uterine cavity. Generally speaking, two weeks after conception, which is equivalent to the time when the next menstrual period is supposed to come, the urine test paper may detect a positive test, and generally, transabdominal ultrasound can only find the gestational sac in the uterine cavity around 40 days after the menopause (according to the physician’s ability to recognize the difference as well as the resolution of the ultrasound), and the serum level of hCG at this time should be at least 2,500 IU, and the transvaginal ultrasound can generally find the intrauterine gestational sac at the earliest time of 35 days ( Early intrauterine pregnancy (hCG >1500 IU) is determined by finding a gestational sac in the uterine cavity at 5 weeks.) Therefore, there is a period of time after a positive pregnancy test and before ultrasound confirms the diagnosis that does not give a definitive diagnosis, which is referred to as the vacuum phase of early pregnancy, during which it is not possible to determine whether the pregnancy is intrauterine or ectopic. Most ectopic pregnancies are diagnosed by exclusion in clinical practice, and there is no intrauterine pregnancy even after the blood HCG reaches a certain standard to diagnose an ectopic pregnancy. Currently, with the help of high-resolution color Doppler ultrasound and its measurement of blood flow, the detection rate of ectopic pregnancies can be improved to a certain extent, and it can detect the gestational sac outside of the uterus or the abnormal echogenicity of the adnexal area with abundant blood flow. If the pregnancy does not cause tubal rupture or ectopic pregnancy abortion, no abdominal pain or bleeding, the patient has no complaints, only manifested as pregnancy, ultrasound did not detect the gestational sac in the uterine cavity, if the hCG>3000IU and did not detect the gestational sac, ectopic pregnancy should be highly suspected. This kind of patients often consult the doctor with irregular menstruation, and when asked carefully about their medical history, there is no menstrual dribbling in the past, and the amount of menstruation this time is a little less, but it lasts for a long time, and it may be dark or black in color, with or without abdominal pain, so it is easy to misdiagnose it as menstrual abnormality. Therefore, for abnormal “menstruation” must be carried out blood hCG test to rule out ectopic pregnancy. Third, the pelvic mass of such patients often once had not severe abdominal pain, there have been a number of varying amounts of internal bleeding, but after the gradual self-stopping, abdominal pain relief, but sometimes hidden pain, ultrasound can be found in the echogenicity of the messy mass, a long time, the absorption of mechanized and even ultrasound changes similar to malignant tumors. Such patients tend to hCG levels tend to be low, but blood tests can still provide a strong basis. Fourth, other ectopic pregnancy has other very rare manifestations: such as normal abortion (abortion see pregnancy) menstruation has not recovered or still have pregnancy symptoms, after repeated examinations for intrauterine and extrauterine combined pregnancy, or part of the pregnancy deep into the myometrium; or a large number of external bleeding diagnosed as cervical pregnancy; a large number of hematuria, for the previous cesarean section scar pregnancy rupture, penetration into the bladder; any contraceptive measures can not guarantee that no Accidental pregnancy occurs, such as sterilization can still be pregnant and more in the tubal ligation of ectopic pregnancy; there are also congenital developmental abnormalities of the uterus, such as residual angle of the uterus pregnancy and so on. In short, the manifestations of ectopic pregnancy in various forms, especially repeated visits to the doctor several times still does not improve the symptoms do not forget to check the blood hCG.