Menstruation in women during menopause may change in three aspects: cycle, blood volume and duration of menstruation, and the length and degree of change may vary slightly depending on individual circumstances. 1. Menstrual cycle disorders: the interval between menstrual cycles may lengthen from the normal 21-35 days to 2-3 months or longer, or may change from a normal menstrual cycle to irregular vaginal bleeding until it stops completely. 2, Abnormal blood volume during menopause: Menopause is usually anovulatory menstruation. As a woman’s menstrual cycle lengthens, the duration of vaginal bleeding will become shorter and the amount of bleeding will gradually decrease. However, if there is persistent vaginal bleeding for 1-2 months, heavy bleeding may also occur. 3. Unstable period time: The normal menstrual period is 3-7 days. During menopause, due to changes in the level of estrogen and progesterone in the body, the endometrium may shed abnormally, resulting in an unstable menstrual cycle. After menopause, the level of estrogen and progesterone in the body decreases and the function of the ovaries also decreases gradually. If you experience menstrual disorders, increased menstrual flow and continuous vaginal bleeding for 1-2 months or more during menopause, it is recommended that you go to the gynecology department of the hospital in time to stop the bleeding as soon as possible to prevent other adverse consequences caused by excessive blood loss.