Excessive endometrial thickening may clinically cause incessant vaginal bleeding, heavy and prolonged vaginal bleeding, and in severe cases may be accompanied by hemorrhagic anemia or hemorrhagic shock. Clinically, for endometrial thickening, mechanical curettage, such as hysteroscopic curettage of the endometrium, or progestin therapy, also known as pharmacological curettage, can be performed to promote the endometrium to peel off as soon as possible to achieve the purpose of treatment. If the patient does not have sexual intercourse and the vaginal bleeding is not particularly heavy, progestin can be used to stop the bleeding.