There are two types of abortion: 1. negative pressure suction: for those who are within 10 weeks of pregnancy. 2. Clamp scraping: applicable to those who are 11-14 weeks old (more than 14 weeks are induced abortion). Painless abortion is based on the above two procedures, plus all intravenous anesthesia. Therefore, it is necessary to fast and abstain from food and water for more than 6 hours before painless abortion. No matter what kind of surgery, a comprehensive medical and gynecological examination must be done before the surgery, and there are no contraindications before the surgery. Contraindications to abortion: 1, the acute phase of various diseases or serious systemic diseases, need to wait for treatment to improve after hospitalization surgery; 2, acute inflammation of reproductive organs, such as: vaginitis, acute cervicitis, acute pelvic inflammatory; 3, pregnancy vomiting acidosis has not been corrected; 4, two times before surgery body temperature ≥ 37.5 ° c. Post-operative precautions: 1, prohibit sexual intercourse and bathing for 30 days; 2, rest for 15 days; 3. Pay attention to the reasonable application of antibiotics to prevent postoperative infection and prevent secondary infection; 4.Repeat examination about half a month after surgery and once a month; 5.If there is large vaginal bleeding or long duration (more than a week), or abdominal pain, fever, etc., please go to the hospital promptly.