If the endometrial thickness is 7mm during menstruation, it is on the thick side, under normal circumstances, the thickness of the endometrial lining during menstruation should not be more than 5mm; if it is 7mm, it should be taken into account whether the woman has abnormal uterine bleeding, such as prolongation of menstruation period, increased menstrual flow, and so on. If the above conditions exist, it is best to perform appropriate hysteroscopy to understand the endometrial condition, and at the same time, perform endometrial diagnostic scraping, and decide the subsequent management based on the postoperative pathological results. If the endometrium is thicker than 7mm at this time, but there is no such condition, and the endometrium is back to normal after review, there is no need for special treatment.