Potassium permanganate is a strong oxidizing agent with disinfecting effect. The main reasons for washing the vulva are as follows: first, because of inflammation of the vulva, potassium permanganate is used for sterilization and disinfection. The second, the vulva has a wound, such as after childbirth or surgery has a wound, cleaning with potassium permanganate to strengthen the vulva care, so that the local vulva to reduce inflammatory reaction, so that the wound heals as soon as possible, so to use potassium permanganate to give cleaning vulva. However, the following points should be noted: first, if you are allergic to potassium permanganate, you should not use this disinfectant to rinse the vulva. The second, the preparation of potassium permanganate pus do pay particular attention to, if too thick will lead to skin mucous membrane damage, it is recommended that the preparation of 1/5000 potassium permanganate solution to wash the vulva.