When washing the foreskin with a high concentration of potassium permanganate lotion, it will produce symptoms of burning and inflammation. The skin of the foreskin and glans belongs to the mucous membrane category, relatively fragile, if the concentration of potassium permanganate lotion is too high, then when using it to wash the foreskin, it will produce burns on the foreskin, which will lead to inflammatory reaction at the site of burns, thus causing localized redness, swelling and hot pain, the foreskin skin, and the entire glans and glans of the skin becomes very dry. If the symptoms are not very serious, the inflammatory reaction can be slowly recovered without special treatment, and the burning symptoms will be slowly relieved. Patients should eat a light diet and more foods rich in vitamin E and vitamin C, such as fresh vegetables and fruits. When the symptoms are serious, they should consult the doctor for examination and early treatment so as not to delay the condition.