After anal fistula surgery, the patient’s diet should be soft and easy to digest. Because of the trauma caused by anal fistula surgery, the healing time is also long and there is a lot of secretion, so the patient’s body loses protein significantly. First of all, you can eat foods rich in protein, such as eggs, tendons, ham soup, chicken soup and protein powder. Eating more protein-rich foods will have a good recovery effect on the healing of the body wound. Secondly, you can also eat foods rich in vitamins, such as spinach, apples, bananas, oranges, and watermelon. Finally, patients must be careful not to eat spicy, stimulating food to prevent irritation of the wound. After the anal fistula surgery, the most important thing to eat is food that is high in protein and vitamins.