The fact that a patient has leukorrhea does not necessarily mean that she is ovulating. Under normal circumstances, women have leukorrhea in normal times, but the amount of leukorrhea is very small, and it is usually not sticky and uncomfortable. The main function of leukorrhea is to lubricate the patient’s vagina and cervix, and the amount of this secretion will increase during coitus, mainly to cushion the friction of the sexual organs and reduce discomfort. When the patient is ovulating, the leukorrhea will increase physiologically, and the leukorrhea is more like pulling silk and transparent, if this kind of leukorrhea occurs, it proves that the patient is in the period of ovulation. In addition, patients can have physiological increase in leukorrhea before menstruation or after pregnancy. The main reason is that before menstruation or after pregnancy, the hormone levels of progesterone and estrogen will increase, and at the same time, there will be pelvic congestion, which will lead to exuberant secretion of the reproductive tract, causing an increase in leukorrhea.