Painless abortion can be done on the 42nd day of pregnancy after diagnosis of intrauterine pregnancy, if the pregnant woman does not have an allergy to anesthesia. The best time for painless abortion is 40-70 days after pregnancy, when the uterus is smaller, the gestational sac is moderately developed, and the muscle of the uterine wall is thicker, so the embryo is easy to be sucked out, and the time used is shorter, the bleeding is less, the chances of surgical complication are also smaller, and the body recovers faster after the operation, so that the harm of the operation on the human body can be reduced to a minimum. Before painless abortion surgery, you need to do preoperative preparations, including gynecological examination, routine leukorrhea test, gynecological ultrasound, electrocardiogram, blood test, blood coagulation four, blood type, hepatitis B five, and so on. If the result is within the normal range and there is no contraindication such as fever and allergy to anesthesia, you can choose painless abortion. Come to the hospital for follow-up 2 weeks after the operation to clarify the recovery of the uterus. Sexual intercourse should be prohibited for 1 month after the operation to avoid infection of gynecological inflammation, and take more rest at the same time.