Potassium permanganate solution has no role in the treatment of foot odor, foot odor patients need to follow the doctor’s instructions to standardize the use of medication. Potassium permanganate solution is a strong oxidizing agent, there is a certain bactericidal and antibacterial effect, commonly used in perianal infections, vulvovaginitis and so on. Foot fungus is a fungal infection of the local skin caused by the inflammatory reaction, potassium permanganate solution does not have a clear role in the treatment of foot fungus. Foot fungus is tinea pedis, it is recommended that patients consult the dermatology department, standardize the choice of drugs, the general use of antifungal drugs, there are topical antifungal drugs, such as naftifine ketoconazole cream, terbinafine cream, etc.; necessary oral antifungal drugs, such as terbinafine, itraconazole and so on. Foot odor is recommended that patients seek medical treatment in a timely manner, to avoid self-medication, the specific use of drugs need to follow the doctor’s instructions.