Iodine volts are not a substitute for potassium permanganate, which is usually used for perineal perianal diseases to give disinfection by immersion, but iodine volts are not recommended for immersion because if iodine volts are used for immersion, if the concentration is high or if the human skin mucosa is relatively sensitive, immersion for a long time may also stimulate the local inflammatory wound, leading to ulceration or chemical burns and other adverse reactions This may aggravate the local inflammatory pain and even lead to more severe local swelling. In the case of urinary or vaginal tissue immersion, only potassium permanganate should be applied, and iodophor should only be used as a local wipe. Diluted potassium permanganate soaking should be done under medical supervision, as too high a concentration may cause corrosive damage to the skin and mucous membranes.