If a woman has a stable menstrual cycle and occasionally has a period that is 10 days early, there is no need to worry too much and no special treatment is needed. However, it is abnormal if menstruation occurs 10 days early frequently. The normal menstrual cycle is 28 days, and a week early or late is basically normal. Occasional 10 days early menstruation may be related to mental stress, staying up late, taking hormonal drugs, emotional problems, etc. No special treatment is needed for the time being, and the symptoms will improve after regular rest. However, if the next few menstrual cycles are still abnormal, there may be endocrine disorders, ovarian dysfunction, inflammation of reproductive organs, polycystic ovary syndrome and other problems. If a woman frequently has her period more than 7 days early, she should consult a doctor and undergo relevant examinations to make a clear diagnosis and receive active treatment in order to prevent hormonal disorders or reproductive organ diseases that may affect her health and fertility.