Whether or not the thickened lining can recover on its own requires clarification of what caused it. For pathological causes of thickening, it is not possible to recover on its own. Physiological thickening of the endometrium can recover on its own if it is not accompanied by specific manifestations. For endometrial thickening, it may be caused by pathological reasons, such as menstrual irregularities or endometrial lesions, and it is necessary to go to a specialized gynecological hospital for ultrasound tests to see what the cause is. If the endometrium is only physiologically thickened, such as before and after menstruation, it will gradually thin after menstruation and no special treatment is needed. If the endometrial thickening is particularly obvious, accompanied by irregular bleeding or longer menstrual cycles, hysteroscopy is needed for further diagnosis and uterine removal treatment, and even in severe cases, it may be caused by endometrial cancer, so the specific cause must be clarified. It is necessary to pay special attention in daily life, and it is necessary to have gynecological examination every six months or three months. Women who have normal sex life may have endometrial lesions.