It is not normal for your period to be 10 days early, but it does not matter once in a while, if it is 10 days early every time, you should pay attention to it. The menstrual cycle is usually about 28 days early and a week later is normal. If you take some kind of medicine, such as emergency contraceptive pills or short-acting contraceptive pills, or if you are under too much stress in work or life recently, you may have early menstruation, but after you stop taking the medicine and adjust your work and life, your menstruation may return to normal. However, if it is 10 days early every time, it may be due to some kind of disease, such as endocrine disorder, luteal insufficiency, early atrophy of the corpus luteum, as well as myoma, polyps or even endometrial cancer. If every menstruation is 10 days early, you need to go to gynecology department for detailed examination in time to exclude organic lesions, check hormone six and check whether endocrine is normal. Patients should pay attention to keep their emotions happy, avoid mood swings, not to be temperamental, pay attention to hygiene, prevent infection, not to be overworked and not to eat stimulating food.