Painless abortion surgery takes about 5 minutes. However, due to the influence of anesthesia factors, it takes about 1 hour from entering the operating room to leaving the operating room. The operation steps are as follows: the patient empties his bladder, walks into the operating room, lies on the operating table, and the anesthesiologist begins anesthesia. After successful anesthesia, gynecologists began to operate, routinely disinfect vulva, spread sterile towels, check the position and size of uterus, dilate vagina with colposcope, sterilize vagina and cervical tube, clamp the front lip of cervix with cervical forceps, explore the direction and depth of uterine cavity along the direction of uterine position, select suction tube according to the size of uterine cavity, dilate cervix, and connect suction tube. Clockwise suction of uterine cavity 1-2 times. When the uterine wall is rough, it means that the tissue has been sucked clean and the operation is over. The whole operation takes about 5 minutes. After the operation, the patient gradually wakes up, but it usually takes about half an hour to leave the operating room safely.