When menstruation stops for 6 months, then comes again, and then stops again, consider that the woman may be in perimenopause, or there is a malignant tumor in the endometrium or cervix, or the follicles remaining on the ovaries may be developing again. 1. Women in perimenopause When a woman reaches the age of 45-55, all the organs of her body start to show signs of aging, and the signs of aging of the ovaries will also be more obvious. The aging of the ovaries may secrete less estrogen and progesterone, which will lead to menstrual disorders, and then the woman will have the symptom of her menstruation stopping for 6 months and then coming back again and stopping again. 2. Malignant tumors in the endometrium and cervix of the uterus This situation mainly occurs in peri-menopausal or menopausal women, mainly manifested in the menopause and then appeared again after menstruation, at the same time may be accompanied by abnormal discharge of fluids, foul-smelling odor, the emergence of such a situation, you need to go to the hospital in a timely manner for examination and confirmation of the diagnosis. 3. Follicles left on the ovaries develop again. If a woman has gone through menopause but suddenly has a normal menstrual period again, this may be caused by the redevelopment of the remaining follicles on the ovaries, which is not an abnormal condition. If vaginal bleeding occurs during menopause, women need to go to the hospital for examination to avoid malignant diseases and delayed treatment.