After anal fistula surgery about 20 days to 30 days to stop bleeding and pus, the specific time and the patient’s condition of the wound size, physical fitness and medication changes, etc. Related. 1. Wound size: after anal fistula surgery, the surgical site will have open wounds, wound recovery process will have persistent oozing, bleeding and pus phenomenon. If the wound is relatively small, the recovery period may be in about 20 days the wound is basically clean, if the wound is large, the recovery time will be extended, it may take 30 days or more. 2. Physical fitness: some patients have better physical fitness, the wound recovery speed to be faster, for the physical fitness of patients, the wound healing speed will be relatively slow, the wound secretion and blood, pus will drain longer. 3. Medication change: After the surgery, you need to change the medication regularly to ensure that the wound area is clean and hygienic. Failure to change the medicine regularly may lead to infection in the area, causing pus and other phenomena, which will affect the normal recovery time and lead to delayed recovery time. As each person’s situation is different, you need to monitor the wound and the surgical area more often after the surgery, and if there is any abnormality, you need to seek medical examination and treatment in time.