A woman who has stopped menstruating naturally for one year does not need to use contraception, while a woman who has stopped menstruating unnaturally needs to use contraception consistently. Natural menopause is a physiological phenomenon that occurs when the follicles in the ovaries of a woman have failed and no longer secrete estrogen and progesterone. Therefore, a woman who stops menstruating and leaves a one-year observation period to make sure that she will not menstruate again will not have to use contraception. If a woman has not reached menopause but has stopped menstruating, this is an unnatural menopause. Unnatural menopause may be caused by endocrine disorders, abortion injuries, ovarian dysfunction, etc. At this time, it is necessary to insist on contraception, otherwise it is easy to have an unwanted pregnancy. When women encounter unnatural menopause, in addition to active contraception, they also need to go to the hospital in time for treatment for the cause of menopause.