Drainage gauze after anal fistula hemorrhoid surgery without red ointment gauze can be used with yellow gauze, can also play a similar effect. Yellow gauze is also called Levonol gauze, it is made by soaking gauze strips in Levonol solution, which is commonly used in clinical practice for bandaging and filling of infected wounds, and has the effect of stimulating tissue growth and antimicrobial properties. After anal fistula hemorrhoid surgery, the yellow gauze covered in the wound can play an antibacterial and anti-inflammatory effect, the use of yellow gauze filling can play a role in drainage, can be the wound pus secretion timely discharge. The yellow gauze needs to be replaced regularly to prevent secondary infection, and after placing the gauze, you also need to observe whether the gauze has played a sufficient drainage role. After placing the yellow gauze in the anal fistula hemorrhoid surgery, please consult the hospital in time to avoid delaying the condition.