The white stuff that appears on the vulva is considered to be leukorrhea, which is usually formed due to mucus secreted by the cervix, or normal shedding of vaginal epithelial cells. Normal women have a small amount of leukorrhea, which can serve as a lubricant. But if there is too much leukorrhea, it tends to stick to the vulva or underwear to form a white stuff. Usually, if a woman is suffering from gynecological inflammation, it will easily lead to excessive leucorrhea secretion, such as cervicitis, vaginitis and other diseases, the symptoms of excessive leucorrhea secretion will also be accompanied by vulvar itching, leucorrhea with odor and other symptoms. It is necessary to go to the hospital for a routine examination of the leukorrhea to make a clear diagnosis. If it is caused by inflammation, treatment measures should be taken under the guidance of a doctor. Women may also experience increased leucorrhea before ovulation, which is a physiological phenomenon and does not require treatment.