The duration of hysteroscopic surgery depends on the specific disease, different diseases and the severity of the disease, the time required is also different, ranging from tens of minutes to several hours. Hysteroscopy is a minimally invasive operation, commonly used in the treatment of endometrial polyps, uterine submucosal fibroids, endometrial hyperplasia, uterine adhesions, uterine foreign body, etc., but also with laparoscopy combined with unblocking the fallopian tubes and so on. Among them, endometrial polyps, submucosal fibroids and endometrial hyperplasia, the operation is relatively simple, such as the scope of the lesion is limited, can be completed in 20 minutes, even if the scope of the lesion is large surgery time-consuming less than an hour, the uterine cavity adhesion surgery operation is delicate, the time required is about one to two hours or so. The most time-consuming surgery is the combined hysterolaparoscopic surgery, due to the unknown site of tubal blockage, it is necessary to slowly enter the tubal opening from the uterine cavity, during which it is also necessary to laparoscopy with the operation, so the operation will take a few hours.