Endometrial polyp examinations are generally conducted through ultrasound at hospitals, which can provide a clear diagnosis. The best time for this ultrasound is within three to seven days after the end of menstruation. During this period, the thickness of the endometrium is between three to four millimeters, and the endometrial echo is uniform. If, during this period, the endometrial thickness is greater than four millimeters and the echo suggests unevenness, this generally indicates a high possibility of endometrial polyps. Patients with endometrial polyps typically experience shorter menstrual cycles, usually occurring every 20 days, with longer menstruation periods. Normally, the menstruation period lasts from three to seven days, but in patients with endometrial polyps, it can extend to over eight to ten days. Therefore, through symptoms and ultrasound, it is possible to determine whether there are endometrial polyps.