Normal condition leukorrhea is white, colorless and transparent, small amount, there is no change in color and nature, which is normal physiological leukorrhea. Leukorrhea with brownish color, like snot, depends on the time of the menstrual cycle. If this time is the period between menstruation, just in time for ovulation, leukorrhea with brownish color, like snot, consider that it is the secretion characteristics of ovulation. At the time of ovulation, as hormone levels show their first peak during the menstrual cycle, there is often a little shedding of the uterine lining and a little vaginal bleeding when the follicle is expelled, causing a brownish change in the leukorrhea. Vaginal discharge is also characterized by special changes during ovulation, that is, the amount is on the high side, thin, easy to be stretched, and the change looks like snot to the naked eye. If it is non-ovulatory, it is necessary to consider whether there is cervical mucosal inflammation, vaginal inflammation and cause, need to do gynecological examination to determine the diagnosis.