In clinical practice, if the pregnancy is greater than eight weeks and the head-rump diameter is greater than two centimeters, the doctor will often advise the patient to have a medication abortion, which involves inserting misoprostol into the posterior vaginal fornix and then triggering contractions to soften the cervix and expel the pregnancy products, followed by a painless cleansing to terminate the pregnancy. The hazards of this method are the following: 1. Due to the special anatomical relationship of the female genitalia, the vagina is connected to the outside world and to the cervix, the cervix is connected to the uterine cavity, and the uterine cavity is connected to the pelvis, so clinically it may cause retrograde infection of pathogenic bacteria and cause inflammation of the pelvis; 2. It may cause damage to the endometrium and cause adhesions in the uterine cavity.