Note for outpatient painless abortion: 1. Those who are willing to have painless abortion and uterus removal should make an appointment for reasonable arrangement. 2.Patients with suspected heart disease should routinely undergo electrocardiogram examination and go to cardiology outpatient clinic if necessary. 3.Patients with combined respiratory diseases should undergo respiratory system examination and go to respiratory medicine outpatient clinic for treatment if necessary. 4.Before analgesia, you should fast for 8 hours and abstain from drinking for more than 4 hours (for example: eat normally for dinner, do not drink water after 12 pm, do not eat or drink water tomorrow morning, and do abortion in the morning to comply with the regulations); in addition, empty the bladder before the examination, remove the movable dentures and jewelry, etc. 5, for your safety, need to be accompanied; . Informed consent for analgesia signed before surgery. 6, the same day shall not engage in driving and other high-risk operations.