An endometrial thickness of 7mm in a woman of childbearing age means that she has reached ovulation. Women after menopause need to be alert for the possibility of endometriosis. 1. Women of childbearing age; the thickness of the endometrium varies at each period and throughout the menstrual cycle. Just after menstruation, the thickness of the endometrium is around 3-5mm. About 14 days before menstruation, the lining of the uterus is about 7-8mm, and before menstruation, the lining of the uterus is about 9-11mm. 2. Women after menopause: the thickness of endometrial lining of women after menopause is about 3mm, if the endometrial lining is about 7mm thick in ultrasound examination, endometrial cancer is highly suspected in this case, and it can’t be ruled out that it is caused by taking health care products or endometrial polyp, so it is necessary to do hysteroscopy and biopsy to confirm the diagnosis in time. For women with endometrial thickness of 7mm, the significance is different at different ages. If the menstrual cycle is broken, you need to pay close attention to it, and you need to consult a doctor to confirm the diagnosis.