Potassium permanganate is able to kill bacteria such as Mycobacterium tetani, Mycobacterium tuberculosis, Mycobacterium smegmatis, etc., and also has a certain effect on fungi. Potassium permanganate belongs to a strong oxidizing agent, which has anti-inflammatory, antibacterial and bactericidal effects, usually by oxidizing the protein active genes in the body of bacteria, and will interfere with the realization of the enzyme function in the bacteria, so as to achieve the bactericidal and antibacterial effects. Potassium permanganate can also play a certain role in fungi through the above ways, and then can also achieve the role of killing fungi. Potassium permanganate is commonly used for local skin disinfection and sterilization, and most of it can be used for sitz baths after anal and other surgical procedures. For dermatitis, eczema and other diseases caused by discomfort has a certain therapeutic effect, but blind use may appear corrosive burns and other adverse reactions, the drug belongs to the external use can not be taken orally, avoid direct contact with the drug with your hands, so as not to cause discomfort, allergies are prohibited. When using potassium permanganate, it should be used under the guidance of a doctor to avoid blind use.