If menstruation is frequently early, the most common clinical cause is due to luteal insufficiency. Since the corpus luteum atrophies earlier, menstruation will be early. Therefore, progesterone can be given clinically for treatment. For example, starting from the 18th day of menstruation, you can take progesterone orally, 1 time a day, 2 capsules a time, for 8 days, and your period will come 3-7 days after stopping the medication, and it is recommended to take it for 3 consecutive menstrual cycles, which will effectively improve the situation of early menstruation and luteal insufficiency. In addition, early menstruation may also be caused by submucosal fibroids in the uterus, so ultrasound examination is recommended to rule out the possibility of submucosal fibroids.