Normal female vaginal secretions are colorless and odorless. By observing the color, texture and properties of the leukorrhea, it can reflect the health status of the female vagina, cervix, uterus, and other tissues and organs in the pelvis. There are physiological and pathological factors that contribute to the gray color of leukorrhea, and there are the following reasons: 1. Physiological gray leukorrhea. The gray color of the leucorrhea alone, not accompanied by vaginal itching, burning, odor and other symptoms, shortly after the end of a woman’s menstruation, or within a few days before the onset of menstruation, may cause a change in the nature of the leucorrhea and gray leucorrhea, dietary factors can also have an impact on the texture of the leucorrhea, when eating too much spicy and stimulating food and greasy food, it may lead to changes in the color of the leucorrhea. 2, pathological Gray leucorrhea, grayish leucorrhea, coagulation into beanbag-like or milk clot-like, accompanied by itching and burning sensation in the vagina, suggests mycosis vaginalis, further diagnosis requires routine laboratory tests of leucorrhea.