There are physiological and pathological yellow secretions. Pathological ones are caused by gynecological inflammation, such as bacterial vaginitis, mycotic vaginitis and cervicitis. In bacterial vaginitis, the discharge is yellow and sticky. It is best to confirm the diagnosis by timely routine examination of the white belt, noting that gynecological inflammation can cause symptoms such as increased discharge and vulvar itching. If there is yellow discharge and no itching, it is physiological. After ovulation, the progesterone secretion will increase and the leucorrhea will appear white or yellowish. If there is a change in the color or nature of the secretion, you should conduct a timely examination of the secretion to avoid untimely treatment and easily aggravate the condition.