The functional layer is the site of embryonic implantation and is regulated by the hormones secreted by the ovaries. Under the action of estrogen secreted by women, the functional layer of the endometrium will continue to proliferate and undergo a change in the secretory phase after ovulation and then shed when menstruation comes, which is a cyclical change. The basal layer will regenerate after menstruation and then repair the endometrial trauma and re-form the functional layer of the endometrium. If the functional layer of the endometrium is damaged, the patient can take Tegretol to promote the growth of the endometrium. However, if the basal layer is damaged, it is very difficult to repair the endometrium by taking Tegretol.