There are a few days each month when the leukorrhea is excessive, mainly the quality and quantity of the leukorrhea, which can change with the menstrual cycle. Leukorrhea is a mixture of vaginal mucous membrane exudate, cervical canal and endometrial glandular secretions. In the middle of menstruation, when the ovaries are about to ovulate, the leucorrhea may increase due to the secretion of the cervical glands, which is transparent and slightly sticky, like egg white; there is also an increase in leucorrhea before and after menstruation due to pelvic congestion and increased vaginal mucosal exudate, so there are a few days each month when the leucorrhea is increased, which is a physiological change, and normally the leucorrhea does not have a fishy odor. In addition to these 2 stages, the amount of leucorrhea is relatively small during normal times, and it increases during the middle of menstruation and when the ovaries are ovulating, as well as before and after menstruation. In the case of a lot of leucorrhea, there is no change in the nature, no fishy smell, the color of the leucorrhea is still white, ovulation is transparent, after ovulation the leucorrhea will become cloudy, thick and sticky, the amount will also be reduced, after the menstruation clean leucorrhea volume will also be reduced, the color is white, into a paste, all belong to the physiological leucorrhea.