Potassium permanganate can be prepared with warm water from a hot water heater, and the concentration is about 1 in 5,000, that is, the potassium permanganate solution shows a light pink color after preparation, basically the concentration reaches 1 in 5,000, if the concentration is too high, it may lead to burns on the local skin or mucous membranes, so the concentration should be paid special attention to. Clinically, potassium permanganate solution is mainly used for routine vulvar care, such as postpartum vulvar care or localized wound cleansing, etc., or used in sitz bath to promote local blood circulation, improve local symptoms, and promote the healing of wounds or the absorption of inflammation as soon as possible. In addition, potassium permanganate can also be used to treat vaginal inflammation caused by trichomonas infection. It can be used to flush the vagina to change the pH level in the vagina, so that the internal environment of the vagina is not conducive to the growth of trichomonas, thus achieving the corresponding therapeutic purpose.