In general, the dangers of abortion are greater than those of birth control pills. The side effects of birth control pills on the human body are still relatively mild, and may cause lack of appetite, nausea, vomiting, fatigue, dizziness, changes in menstruation, etc. Most of them will not have serious complications. But it is not the same for women to have an abortion, because abortion is a surgery, the damage to the human body will be greater, there is a possibility of perforation of the uterus and rupture of the uterus during the operation. There is a possibility of intraoperative and postoperative bleeding, hemorrhage or even hemorrhagic shock. There is a possibility of secondary infertility, habitual abortion or causing damage to the uterine lining, causing the patient’s menstrual irregularities or even amenorrhea.