The only requirement is that the cleaning is thorough and clean. There are many bacteria in the stool that can aggravate the anal fistula infection, thus affecting the treatment effect and wound healing time. The method of cleaning the wound after anal fistula surgery is as follows: 1, potassium permanganate powder bath, cleaning: potassium permanganate is commonly used skin mucous membrane disinfectant, commonly used after surgery as anal wound disinfection, cleaning, its concentration to 1:5000 as the standard, to avoid drug too thick burn skin mucosa, cleaning, disinfection, available small towel or small gauze block cleaning the wound at the stool, secretions, so that the wound remains clean; 2, Chinese medicine The first thing you need to do is to take a look at the actual results. If the wound is deep and has anaerobic bacterial infection, you need to use hydrogen peroxide for cleaning within the wound.