白带是由阴道黏膜分泌物、宫颈及子宫内膜腺体的分泌物等混合而成,并受体内雌、孕激素的影响。正常情况下,随着月经周期中体内雌、孕激素水平的周期变化,白带的量、性状也会发生周期性的改变。一般来讲,月经刚干净后白带量少;随后逐渐增多,至排卵期前,受体内雌激素水平升高的影响,白带逐渐增多,质 Leucorrhea is vaginal mucosal secretions, cervical and endometrial gland secretions and other mix, and by the body of estrogen and progesterone effects. Under normal circumstances, with the menstrual cycle in vivo estrogen and progesterone levels of the cycle changes, the amount of leucorrhea, traits also occur cyclical changes. In general, the amount of leucorrhea just after menstruation was clean; then gradually increased to the ovulation period, the role of estrogen levels, the gradual increase in leucorrhea, quality