The main indications are women with early pregnancies between 40 and 50 days, and the methods are described as follows: 1) Ordinary abortion, which is the traditional method, with negative pressure to attract the intrauterine sac, without any auxiliary pain reduction methods. 2.Local anesthesia abortion, local anesthesia is injected into the cervical opening before the operation, which can reduce the pain of the operation to a certain extent. 3.Laughing gas painless abortion, before the operation through the respiratory tract inhalation of appropriate amount of laughing gas, laughing gas is a gas, has a certain anesthetic effect, in the abortion surgery can effectively reduce the pain caused by the operation, but the pregnant woman is awake, sensitive women will be affected by the pain-reducing effect, preoperative preparation as above 4.Intravenous general anesthesia painless abortion, this method is the real sense of painless abortion, first of all, to establish Intravenous fluid circuit, from the intravenous fluid circuit into the general anesthetic drugs, the whole procedure women in a sleep state, the whole operation by the anesthesiologist supervision, safe and reliable, preoperative preparation in addition to the above preparations also need to fasting water 6 hours.