Before menopause, women will experience some symptoms of menopause, which manifest as menstrual disorders, including excessive menstruation, insufficient menstruation, early menstruation, or missing periods for two to three months. The main symptoms of menopause include irritability, easy annoyance, hot flashes, night sweats, and poor sleep at night. These are all caused by menopause. At this time, hormone replacement therapy can be used. Hormone replacement therapy is very effective for treating menopausal syndrome, delaying aging in women, and protecting women's bones and heart.