Endometrial 5mm has different clinical significance at different stages, for women with immature sexual organs, it is generally normal, for women who have already developed, it needs to be combined with specific menstrual cycles and personal conditions, for postmenopausal women there may be abnormalities that need further examination. 1, for women aged <16 years old, who have not had their menstruation, the ovarian gonadal axis has not yet developed Mature, endometrial thickness of 5mm means it is normal. 2. For women of age who have developed and matured, it needs to be combined with the menstrual cycle to determine. The first 2 weeks of the menstrual cycle is the endometrial proliferation period, when the endometrial thickness of 5mm is normal; the second half of the menstrual cycle is the luteal phase, when the endometrium is thicker, and the endometrial thickness of 5mm indicates a thin endometrium. Female sex hormone six and thyroid function should be checked to exclude hyperprolactinemia, abnormal thyroid function, premature ovarian failure and other specific endocrine diseases. If there are endocrine diseases, the corresponding specific treatment should be given. 3. For women after abortion, endometrial thickness of 5mm is also normal within half a month after abortion, because the endometrium is shed after surgery and the ovaries do not resume ovulation. For post-abortion women, the endometrial thickness is only 5mm after 40 days, which is not a normal performance. It is mostly considered to be a menstrual disorder due to the endocrine function of the ovaries affected by the surgery. plus treatment. If there are endometrial polyps, they may need to be removed surgically and also scraped, and the uterine cavity scrapings should be sent for pathological testing to exclude endometrial hyperplasia or endometrial cancer, etc.