Before menopause, most women will experience irregular menstruation and some menopausal symptoms. When women reach about 45 years old, due to the decline of ovarian function, they will experience a decrease in the secretion of estrogen and progesterone, which will gradually lead to menstrual disorders and cause early or delayed menstruation. Sometimes menstruation occurs once every 2-3 months; sometimes it occurs twice a month; some menstruation lasts longer than half a month; some menstruation lasts for several months without menstruation, and the amount of menstruation is more than once; some menopausal symptoms also appear, such as hot flashes, sweating, irritability, insomnia, etc. The skin appears dry and unsmooth, wrinkles increase, some facial spots appear, and the body starts to turn toward The body starts to become cardiac obesity, easy to appear fatigue, weakness, etc. These are the precursors of pre-menopause. If these symptoms appear, it is best to go to the hospital in time to check the endocrine system to confirm the diagnosis. You can take some Chinese medicine to relieve the symptoms. In the diet, pay attention to eating more soy-based foods to help women go through menopause safely. In short, the precursors of menopause are mainly menopausal symptoms and endocrine disorders caused by the decline of ovarian function, resulting in irregular menstruation.