The recovery process of anal fistula surgery includes inflammatory period, granulation proliferation period and epithelial covering period. 1. Inflammatory period: 3 to 10 days after anal fistula surgery, the wound may have inflammatory exudate and necrotic tissue, part of the anal fistula surgery may be open wounds, it is recommended that patients keep the wound clean and sanitary, disinfect and change the medication on a regular basis, and do a good job of anti-inflammatory work in a timely manner. 2. Granulation proliferation period: 10 to 20 days after the anal fistula surgery, the wound secretion is reduced, the wound will grow new granulation tissue from the bottom upwards. At this time, the granulation tissue is very fragile, so you need to protect the granulation tissue. The dressing can be changed every 2 to 3 days to promote the growth of granulation tissue. 3. Epithelial coverage period: 20 to 25 days after anal fistula surgery, the wound secretion gradually disappeared, the granulation tissue has basically grown to fill the defect, the wound epithelial cells also began to grow gradually. It is recommended that during the wound healing period, keep the bowel clear, warm water sitz bath after defecation and before going to bed, keep the anal area clean and hygienic and clean, disinfect and change the dressing every day, monitor the healing of the wound to prevent infection and pseudo healing, and regular outpatient re-examination, and if there is any abnormality, deal with the treatment in a timely manner.