The majority of girls will have their first period in 3-7 days, but due to individual differences, and because the ovarian function may not be perfect at the time of the first period, some girls will have their first period for a longer period of time. If it takes more than 9 days, it is an abnormal phenomenon. It is best to drink brown sugar water and add motherwort to stop bleeding. If there is still bleeding after 3 consecutive days, you can go to the hospital for appropriate examination to exclude the possibility of uterine deformity and other diseases. Because it is the first time, some physiological knowledge is still unknown, so the family should give good hygiene period guidance, tell the girl during menstruation should not run, do not eat cold food, do not drink ice-cold drinks.