There may be the following reasons for very wet underwear: 1. Physiological state: For example, during ovulation relatively vaginal secretions will increase, similar to egg white, which will lead to a wet feeling in the underwear. In addition, before menstruation will also make the endometrial glands secrete a lot, and lead to an increase in vaginal secretions, panties may also appear wetter phenomenon. After pregnancy, the increase of estrogen and progesterone leads to an increase in cervical secretion and vaginal secretion, which may also lead to wetter underwear. 2. Pathological state: due to vaginal inflammation, cervical cancer, endometrial cancer or fallopian tube cancer, all may lead to the appearance of large amounts of secretions, which may be accompanied by other phenomena, such as odorous secretions, and the discovery of this situation promptly to the hospital for examination.