The increase in leukorrhea when menstruation is approaching may be caused by physiological factors, or it may be caused by pathological factors. 1. Physiological factors: Before menstruation, due to the high level of estrogen and progesterone, uterine congestion and other factors, the glands of the female reproductive tract will secrete exuberantly, or take certain medications will appear to increase the leukorrhea, usually not accompanied by other uncomfortable symptoms. 2. Pathological factors: women suffering from certain diseases can also appear before menstruation leukorrhea increase phenomenon, such as trichomoniasis, gonorrhea, uterine fibroids, etc., in addition to the increase in leukorrhea, usually accompanied by a number of other symptoms, such as vulvar itching, pain in the abdomen, frequency of urination, urinary urgency and so on. There may also be other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.