Potassium permanganate sitz baths are useful for localized skin inflammation and edema, and are often used clinically for vaginitis, urinary tract infections, and perianal diseases. Normally, the duration of a potassium permanganate sitz bath should be limited to about 15 minutes. Patients are usually advised to soak in a 1:5000 solution of potassium permanganate in warm water. It is forbidden to use a sitz bath with too high a concentration of potassium permanganate because it has a strong oxidizing effect and too high a concentration may irritate and damage the local skin. The duration of the sitz bath should be limited to about 15 minutes, too long or too short is not conducive to the recovery of the trauma. In conclusion, it is recommended that patients apply potassium permanganate solution under the guidance of a professional doctor, avoiding blind abuse, keeping the area dry and clean after the sitz bath, while eating a light diet and reviewing regularly.