Painless abortion will not cause more obvious pain, is a general anesthesia surgery. Painless abortion is a general anesthesia surgery, generally given to the patient first intravenous anesthetic drugs to anesthesia, equivalent to intravenous general anesthesia, after anesthesia, the patient is in a state of sleep, to be completed after the operation and then wake up the patient, there is no pain during the operation, but the uterine contractions after the operation may be painful for 1-3 days, the entire operation is generally about 30 minutes to complete the operation time. Painless abortion because of general anesthesia, so before the operation, you need to routinely do the relevant checks, the need to fasting and water fasting for at least 6 hours before the operation, in addition, if there is a history of disease before the operation or recently in the use of medication, be sure to inform the doctor in a timely manner and in detail, do not hide, cooperate with the doctor to carry out the relevant checks, to avoid intra-operative and post-operative accidents.