If it is once in a while, the period in advance of a week or less, is a normal phenomenon, most of them are with the girl’s mental, psychological stress, or environmental factors and lead to the endocrine hormone level temporary imbalance has a relationship, generally pay attention to keep the mood relaxation, the first temporary observation can be. If a woman’s period often occurs in advance and each time in advance for more than a week, mostly due to abnormal fluctuations in female hormone levels resulting in endocrine disorders and other reasons, so it is best to go to the hospital to do a gynecological ultrasound and sex hormone 6 examination. If it is caused by low hormone level, you can give appropriate supplementation of estrogen and progesterone for cyclic treatment, 3-6 courses, and also pay attention to the regularity of life, avoid staying up late, and be in a good mood, which is also conducive to the recovery of endocrine disorders in women.