When a patient’s blood chorionic gonadotropin and progesterone tests show pregnancy but then vaginal bleeding is present, the main consideration is that the patient has an abnormal pregnancy, such as a biochemical pregnancy, a pre-eclampsia or an ectopic pregnancy. A single test of blood chorionic gonadotropin and progesterone can only observe whether the patient is pregnant or not, not the activity of the patient’s gestational sac and whether the pregnancy is hysteroscopic or ectopic. Therefore, when a patient presents with this condition, it is important to perform dynamic and continuous observation of the changes in blood HCG and progesterone, and if necessary, a gynecologic ultrasound is required. If the patient has a blood test showing pregnancy, the gestational sac is not visible on ultrasound. The patient presents with a gradual increase in vaginal bleeding, like menstruation, which clears in about a week, in which case a biochemical pregnancy should be considered. If the blood test shows pregnancy and the ultrasound shows an intrauterine pregnancy and the patient presents with a small amount of bleeding. In this case, preterm miscarriage should be considered, and treatment to preserve the pregnancy is needed according to the test results. If the patient is pregnant by blood test and the ultrasound observes an abnormal mass outside the uterus and the blood HCG progesterone level is low and doubled badly. In this case, ectopic pregnancy should be considered, and depending on the examination, conservative treatment or surgery can be chosen.