The common causes of anal coolness include anal fistula, anal sinusitis, etc., and the treatment methods include medication and surgical treatment. 1. anal fistula: is the peri-rectal abscess broken or incision drainage of the sequelae of lesions, the main clinical symptoms for the fistula continued or intermittent outflow of purulent, bloody secretions, with fistula defecation. Treatment includes drug therapy, such as cefdinir, montelukast, lactulose, etc.; serious condition can be treated by surgery, commonly used surgical fistula including anal fistula incision, anal fistula resection and hanging line therapy. 2. Sinusitis: sinusitis is an acute and chronic inflammation that occurs in the anal sinus, anal valve, the main clinical symptoms of defecation with a feeling of falling, anal itching, and so on, the pain worsens when defecating. Treatment includes medication such as metronidazole, levofloxacin, etc., but also through 1:5000 potassium permanganate solution and other sitz bath treatment. Severe conditions can be treated by anal sinus incision and drainage. When patients have perianal discomfort, they should go to the hospital immediately, make a clear diagnosis, and actively give treatment. The medication should be used according to the doctor’s prescription.