Termination of pregnancy after 30 weeks of pregnancy cannot be called abortion, but requires induction of labor, which is the same process as that of a full-term vaginal birth with a normal delivery. There are several clinical methods of induction of labor as follows: i. The most commonly used method of induction of labor is mifepristone plus misoprostol. Second, the method of induction of labor by intra-amniotic injection of Levanox. The choice of the method of induction of labor is mainly based on the specific circumstances of the patient, such as whether it is a scarred uterus, whether it is combined with other medical comorbidities and cervical maturity, in short, according to the comprehensive situation of the patient to choose the appropriate method of induction of labor.