Potassium permanganate is a strong oxidizing drug, and its long-term use is usually not recommended. Potassium permanganate is commonly used to destroy bacteria, viruses and other germs; it can also be used for excessive leukorrhea, vaginal douching and prevention of urinary tract infections, etc. It has the functions of disinfecting, sterilizing and anti-inflammatory. Long-term use of potassium permanganate may cause damage and irritation to the skin of the body, so long-term use of this drug is not recommended. It should be noted that the use of potassium permanganate needs to be under the guidance of a doctor or pharmacist to match the concentration before using the drug, in order to prevent adverse effects on the body. In addition, the duration of the medication also needs to be strictly controlled, too short a period of time may not be able to achieve satisfactory results, while too long a period of time may cause some harm to the body. If you need to use potassium permanganate externally, you need to go to a regular hospital to consult a doctor and use the medication under the doctor’s guidance to avoid abusing the medication in order to prevent abnormalities.