The normal diet can be resumed 1-2 days after anal fistula surgery, theoretically you can eat beef at this time, but the anorectal surgeon recommends that patients eat more vegetables and fruits and have a lighter diet 1 week after surgery. The reason is that eating more vegetables and fruits rich in high fiber for 1 week after surgery can form a looser and more regular stool, which can reduce the stimulation of the post-operative wound and reduce the patient’s post-operative pain, and can promote early wound healing. The wound will start to grow after 1 week after surgery. During this period, you can eat more nutritious foods such as beef and mutton because they are rich in nutrients and can also promote early wound healing.