There is a misconception among the common people of female urinary tract infections that, like gynecological inflammation, they always like to douche with disinfectants such as jelqing and potassium permanganate, but the professional guidelines for urinary tract infections do not advocate douching. However, it is important to pay attention to the hygiene of the perineum, and even washing is routine, such as rinsing with saline or bath water, and just keeping it dry and wiping it off afterwards, without the need for special medication for rinsing. The main reason is that the body itself has a self-defense environment to resist external attacks, if the use of strong disinfectants disrupt the environment, breaking the balance, but easy to infect, and even dependence, not wash can not form a vicious circle, so clinically do not advocate in the urinary tract infection when topical drug douche.