Potassium permanganate antiseptic tablets can be used for anal fissures, but should be done under medical supervision. Potassium permanganate disinfectant tablets are highly oxidizing and have certain bactericidal effect, and are suitable for perineal cleansing after dilution. Low concentration of potassium permanganate can kill germs, and has the effect of swelling, can be used for hemorrhoids, anal fissure and other diseases, high concentration of potassium permanganate corrosive, may aggravate the anal fissure, so the use of potassium permanganate disinfectant tablets need to pay attention to the appropriate dilution of concentration. Anal fissure is usually caused by constipation, fecal dryness, in addition to medication need to pay attention to good living habits, light diet, do not eat spicy and stimulating food, increase the intake of fresh vegetables and fruits, promote gastrointestinal motility, promote defecation. Anal fissure patients need to consult a doctor in a timely manner, appropriate laxative, so as not to make the condition more serious.