Potassium permanganate can be soaked in boiling water, but care should be taken to regulate the temperature and concentration before use so as not to cause damage to the skin mucosa. Potassium permanganate can be used in acute dermatitis, acute eczema, localized skin infections and infections, skin ulcers and other conditions. Before use, attention should be paid to the proportion of dilution, dilution can use hot water, but should pay attention to the cleanliness of the diluted solution, and the concentration of the appropriate configuration. Overheated solutions can cause burns, while highly concentrated potassium permanganate solutions cause corrosive burns. Oral administration of this drug may cause nausea, vomiting, liver and kidney damage, cardiovascular function inhibition, circulatory failure and other injuries, and is absolutely prohibited. Potassium permanganate does not require a specific temperature for dilution, but care should be taken to dilute the solution according to its concentration, and oral administration is prohibited. The use of potassium permanganate should be carried out under the guidance of a doctor.