There are several signs before menopause in women: 1. The onset of menstruation is slowly delayed, i.e., each menstruation is 3-5 days later than the previous one, which is caused by a decrease in the function of the endocrine system in the body. When the endocrine function is low, it will lead to the delay of menstruation, which is a precursor to the cessation of menstruation. 2. The volume of menstruation will gradually decrease, because with the arrival of menopause, the endocrine function and excretory function of the ovaries, as well as the function of the vagina and uterus, will have a slow decline, which will lead to a gradual decrease in the volume of menstruation. 3. The color of menstrual blood will gradually increase, which is also a sign that a woman will stop menstruating.