After anal fistula excision, the flesh usually starts to grow in 7-10 days until the granulation tissue fills the wound, which usually takes 30-45 days. The specific time to grow meat is related to the patient’s condition and physical fitness. About a week after the anal fistula surgery, the anal fistula internal opening site began to grow meat, generally along the fistula gradually extend outward, the wound gradually become shallow, until fill, epidermal healing. Because anal fistula is an infectious disease, so after surgery should pay attention to keep the wound clean, regular medication change, promote the growth of traumatic granulation tissue, in order to shorten the healing time. After anal fistula surgery, in order to wound normal good healing, at the same time patients need to dietary management, eat more food containing high protein, multi-vitamins, etc., to supplement the rich nutrition, promote wound healing. It should be noted that, because anal fistula is divided into low type, high type, simple type, complex type, so its surgical wounds have a big difference, usually 7-10 days after the operation began to grow meat. It is recommended that patients follow the doctor’s instructions to actively cooperate with the postoperative treatment, regular review, find problems, and give early treatment.