Uterine puncture test often refers to the posterior vault of the uterus puncture test, often used in the case of suspected ectopic pregnancy, and through ultrasound found that there is a pelvic effusion, you can do a puncture of the posterior fornix, draw out this fluid to understand whether it is non-clotting blood. If this is the case, the diagnosis can be clarified and further treatment can be given in the clinic, either conservative treatment or surgery. Another type of posterior fornix puncture, if the corpus luteum is ruptured, through the posterior fornix puncture can also be drawn out the non-clotting blood, then according to the medical history, blood HCG test results can be clearly diagnosed, and then give the appropriate treatment, this case is also based on the amount of bleeding to choose the treatment method, can be conservative or surgical.