Women generally enter menopause between the ages of 45 and 55, when ovarian function gradually declines, from irregular ovulation to the cessation of ovulation. The main precursor of menopause is therefore a change in menstruation. Some people experience a lengthening of the menstrual cycle, while others experience a shortening of the menstrual cycle and a decrease in menstrual flow. If amenorrhea is prolonged it may manifest as heavy, prolonged and incomplete bleeding. Due to hormonal fluctuations, changes in menstrual cycles, menstrual volume and bleeding patterns are accompanied by other physical discomfort and emotional problems, including hot flashes, sleep disturbances, vaginal dryness and sensitivity, anxiety and depression. The frequency and severity of these symptoms are low before menopause and increase as menopause progresses. The onset of menstrual disorders signals the approach of menopause, at which point attention should be paid to adjusting menstruation, primarily by using exogenous female hormones to mimic the hormonal changes of the menstrual cycle and making menstruation as regular as possible. Regular menstruation not only reduces hot flashes, improves sleep and calms the emotions, but also prevents the occurrence of some serious diseases, including anemia, endometrial lesions and endometrial cancer.