The increase in leukorrhea due to tight pants is considered to be vaginal inflammation caused by poor ventilation. Girls wear tight pants will lead to poor ventilation of the vulva area, so that the vulva area for a long time in a moist environment, women’s vagina is a number of bacteria and fungi colonization, under normal circumstances, and will not cause disease, but when the environment is suitable, bacteria and fungi will proliferate, causing inflammation of the vagina, leukorrhea increase. Pants tight leukorrhea increase, it is recommended to go to the hospital for a detailed examination, to clarify the type of vaginitis, symptomatic treatment, the more common is bacterial vaginosis, vulvovaginal pseudomyxoma, etc., different types of vaginitis medication is different. Vaginitis in the treatment period should pay attention to personal hygiene, change and wash underwear, do not share bath towels or bath tubs, usually choose loose cotton underwear, do not wear tight pants.