Drainage gauze after anal fistula hemorrhoid surgery can usually be used yellow gauze, yellow gauze has a certain effect on promoting wound healing. Yellow gauze is commonly used in clinical infected wounds, usually after anal fistula, hemorrhoids surgery, the use of yellow gauze is mainly to allow the wound secretions can be smoothly drained out, yellow gauze is the main component of the Levonorgestrel liquid, can play a bactericidal and antiseptic role. After anal fistula, hemorrhoid surgery to keep the bowels free, should pay attention to wound cleaning and disinfection, so as not to cause infection; can also use 1:5000 potassium permanganate solution sitz bath, play a clean, anti-inflammatory, reduce the role of swelling; try to avoid prolonged sitting, standing, so as not to recur. Drainage gauze after anal fistula hemorrhoid surgery can usually be used yellow gauze, patients should pay attention to regular dressing change to avoid infection, if there is perianal discomfort and questions, you can consult the doctor to guide or give treatment.