Some patients with endometrial polyps may present with painful periods and others with dripping menstruation, but there are still some women who do not have any clinical manifestations. Because ultrasound is still very difficult to diagnose endometrial polyps, especially small ones, hysteroscopy should be considered for women with fertility difficulties, especially infertile women, when they have obvious symptoms, and for patients without obvious symptoms but with infertility for more than three years, especially those with combined polycystic ovary syndrome or low ovarian function, hysteroscopy should be done to exclude endometrial polyps that may cause fertility disorders!