Leukorrhea is not a manifestation of the onset of menstruation. When menstruation is approaching, the level of estrogen in the body will drop rapidly, and the level of progesterone will rise, which will result in a decrease in vaginal secretions, and there will be a decrease in vaginal secretions rather than an increase in leukorrhea when menstruation is approaching. Increased leukorrhea occurs during and around ovulation, when the highest levels of estrogen in the body cause cervical and vaginal secretions to increase and become thin. Increased leukorrhea can be seen in reproductive system infections, vaginitis is the most common, followed by cervicitis, accompanied by leukorrhea odor, leukorrhea color change, increased leukorrhea can be seen in reproductive system tumors, cervical cancer is the most common, mainly watery leukorrhea and bloody leukorrhea, usually pay attention to change underwear, wear cotton, breathable underwear.