There are always a few days a month when there is a lot of leucorrhea, a normal physiological phenomenon, do not worry too much, the quality and quantity of leucorrhea will change with the change of the menstrual cycle and change. The leucorrhea will increase during ovulation because the estrogen level increases before ovulation and reaches its peak. Estrogen can make the cervical opening relaxed and dilated, and the secretion of cervical mucus increases, the shape becomes thin, clear and transparent, lubricated and elastic, egg-white like, easier to pull and not easy to break. In addition to this, the amount of leucorrhea increases in the days before the onset of menstruation as the estrogen level in the body changes. If the leucorrhea is normal in color and not accompanied by vulvar itching, it does not require special treatment. Pay attention to the hygiene and cleanliness of the perineum, wear loose underwear, and change it properly and diligently to reduce the possibility of developing diseases. If there is an increase in leucorrhea along with color change and odor, gynecological inflammation, such as vaginitis, cervicitis, etc., should be promptly referred to a doctor to identify the pathogens for targeted treatment.