Clinically, for different degrees of endometrial polyps, the time needed to do the surgery is different, there are several cases: First, for mild endometrial polyps, that is, the volume of polyps is very small, and the number of polyps is not much, for this case to do the surgery of endometrial polyps, the time needed is about half an hour to complete successfully. Second, for moderate endometrial polyps, that is, the volume of polyps is relatively large and there may be more than two polyps, for this condition to do endometrial surgery, the time required is relatively long about 1-2 hours. Third, for severe endometrial polyps, that is, polyps are relatively large and can have three or even more than three polyps, and the base of the polyps are more extensive, so the operation will take longer, usually in 3-4 hours to complete, or even longer.