Endometrial hyperplasia, clinical ultrasound can be used to determine the thickness of the endometrium, to determine the hyperplasia, ultrasound can clearly see the condition of the endometrium, normal endometrium in the follicular growth period, is in the 4-8mm, with the growth of follicles, in the period of ovulation can be reached 8-10mm or so, and before menstruation can be reached 15mm or so. If the lining of the uterus is overgrown, it may reach about 20mm. The condition of the lining of the uterus can be measured by ultrasound to determine the treatment of the lining of the uterus. Endometrial hyperplasia can be simple hyperplasia, complex hyperplasia, or endometrial tumor-like hyperplasia. All endometrial hyperplasia is caused by ovarian dysfunction and lack of ovulation.