It is a normal physiological phenomenon if there is a pile of white sticky material discharged from a woman’s vagina after sexual intercourse, which is a vaginal secretion. This is because during sex, the stimulation of the vagina by the penis and the prostatic fluid secreted by the male penis will stimulate the female vagina to a certain extent, and in the case of stimulation, the vaginal discharge will increase significantly because of the individual’s physiological reaction, which is a normal physiological phenomenon. If the mucus has a distinct odor or causes significant vaginal itching, it may be caused by vaginal inflammation, which can lead to abnormal vaginal discharge. The symptoms may be aggravated during sexual intercourse. A routine examination of the white belt is needed to determine the type of inflammation and to provide symptomatic treatment according to the results of the examination.