The procedure can be painful, but the level of pain varies from person to person and usually takes about 30 minutes to complete. The procedure involves entering the uterine cavity through the vagina and cervix and using a scraper or suction tube to clean out the endometrial tissue, abnormal residues, etc. from the uterus. This procedure takes about 30 minutes if the patient has no adhesions, uterine abnormalities, etc. It may take longer if there are other abnormalities. As the cervix needs to be dilated first during the operation, the cervical opening is relatively tight in infertile women, which may cause more intense pain during dilatation, while in fertile women the cervical opening is looser and the pain during dilatation is mild or even painless. In addition, when cleaning the uterine cavity, the instrument scraping the endometrium will induce uterine contraction, which will also cause pain. The degree of this pain will be judged according to the woman’s sensitivity to pain, and most women can tolerate it, while a few women with a low pain threshold may experience nausea, vomiting, panic, lower blood pressure, etc. due to pain. The patient’s pain tolerance should be fully evaluated before the operation. For patients with a low pain threshold or who are afraid of pain caused by uterine removal, the operation can be performed under intravenous compound anesthesia.