Potassium permanganate is used for different purposes in different ways, for example, when used to disinfect tableware, fruits and other items need to be dissolved and diluted to 0.1% solution, rinsed after immersion, in addition to the mucous membrane disinfection, skin inflammation, snake bites, deodorization, potassium permanganate also has different dilution ratios and methods of use, you need to consult a physician after use. 1. Disinfection of articles: When potassium permanganate is used for disinfection of fruits, tableware, vegetables and other articles, it should be dissolved in water and diluted to 0.1%, or buy 0.1% potassium permanganate solution, soak the articles to be disinfected for half an hour and then fish out the articles to be disinfected and flush them with clean water. 2. Mucous membrane disinfection: when disinfecting mucous membrane such as cavity flushing, vulva flushing, gastric lavage, etc., the mucous membrane is usually sensitive and easy to be irritated, so it needs to be dissolved into 0.01%~0.02% solution and then used. 3. Skin inflammation: for boils, carbuncles and other skin inflammation and eczema, potassium permanganate can be dissolved and diluted to 0.025% solution, and then the solution should be moistened with gauze and the gauze should be covered on the surface of the affected area for about half an hour each time, and it should be carried out for 3~5 times a day. 4. Snake bite: For abscesses and ulcers produced after snake bite, 0.1% potassium permanganate solution can be used for rinsing. 5. Deodorization: 0.1% potassium permanganate can be used for sterilization and deodorization of feet, water and refrigerator. Potassium permanganate is toxic and corrosive. Inhalation can cause respiratory damage. Splash in the eyes, irritate the conjunctiva, and in severe cases, cause burns. It is brownish-black in color after irritating the skin. Concentrated solutions or crystals are corrosive to skin and irritating to tissues. Therefore, special care must be taken when using it. If the condition requires the use of potassium permanganate patients can go to the relevant departments of regular hospitals to consult the relevant precautions.