Many people have endometrial thickening. If endometrial thickening cannot stop bleeding, it is because most endometrial thickening is due to endocrine disorder or the action of estrogen, which leads to more endometrial hyperplasia, so the endometrial lining is particularly thick in the middle and late stages when menstruation is coming soon. The main manifestations of endometrial thickening are vaginal bleeding, menstruation that does not go away for many days, or menstruation that does not come even after many days, which are the results of estrogen action. If the endometrium is combined with endometrial cancer, we need to see how to treat it next.