Most of the amenorrhea caused by thin endometrium is related to the endometrial damage caused by multiple abortions or excessive blood after abortion, endometrial scarring or adhesion, which can lead to endometrial thinness causing amenorrhea. In addition, radiation therapy is required for various diseases, resulting in atrophy and destruction of the uterine lining, causing amenorrhea. Menopausal women are affected by hormones in the body, estrogen decreases, the endometrium can not grow up, which can also lead to endometrial thinning caused by amenorrhea. Women of childbearing age can take estrogen and progesterone medication to encourage the endometrium to grow and allow menstruation to occur, with three months of treatment as a course of therapy, while menopausal women may have reached menopause.