A successful abortion is one in which there are no other abnormal symptoms, no abdominal pain, no bleeding, etc. After successful abortion, the fetal sac will be discharged in about 3 days after taking the medicine, and all of the fetal sac has been discharged through ultrasound or blood and urine HCG test, vaginal bleeding has stopped, and there is no abnormal leucorrhea, etc. This is a successful abortion. When the abortion is unsuccessful, the main manifestation is abdominal pain, typically the abdomen is swollen, painful, bleeding for more than 2 weeks, or even longer, dripping, bleeding day by day, or even bright color, this may be the phenomenon of unsuccessful, if the success of these phenomena will not appear. In addition, if the medical abortion is unsuccessful, there will also be nausea, vomiting or even fever, yellowing of the leucorrhea, etc. This may be the bacteria invading the uterus due to infection, so when the medical abortion is successful, there will not be these phenomena.