Leukorrhea is increased before menstruation, mainly because before menstruation, sex hormone levels change, endometrial glands appear to secrete vigorously, so it will be manifested as an increase in the amount of leukorrhea. But the color of the leukorrhea and the nature of the leukorrhea will not change, so leukorrhea increase before menstruation is a normal phenomenon. However, if the leukorrhea is yellow and smelly, or accompanied by vulvar discomfort, vulvar itching, etc., it is an abnormal phenomenon, which is mainly caused by vaginal inflammation. It is recommended that you go to the hospital for a routine examination of the leukorrhea, and according to the results of the clinical to give the appropriate treatment. When the vaginal secretion increases, must keep the vulva local clean, and recommended to change the underwear, wash the underwear must be in the sun to dry, play the role of sterilization.