Girls who have leukorrhea will have their menstruation in about half a year due to their physical condition and genetic factors, and in a few cases, in a year. Before menstruation, there will be leucorrhea, because the endometrium is thicker and the hormone level is higher, the vaginal secretion will increase, thus there is the phenomenon of leucorrhea, there is leucorrhea indicates that there is estrogen secretion in the body, indicating that the girl is now entering the developmental period. The first menstruation of women is 12-16 years old, the appearance of leucorrhoea indicates that the level of estrogen has not yet reached the amount of menstruation, but the first menstruation will occur in about six months after the girl comes to leucorrhoea, depending on the quality of personal health and genetic factors, the time will become longer or shorter, do not worry too much. It is important to pay attention to personal hygiene to prevent inflammatory infections from occurring.