Anal fistula surgery is usually a procedure in which the fistula is cut or removed under epidural anesthesia to achieve healing of the lesion. During the postoperative recovery period, you can promote recovery by eating foods rich in fiber, vitamins and water, preventing wound infection and reducing edema medication. Due to the different physical condition and postoperative recovery of individuals, only what is suitable for the people who have undergone anal fistula surgery is the best. 1. Foods and fruits rich in fiber, vitamins and water: After anal fistula surgery, we should have a semi-liquid diet, and also take in celery, spinach, lean meat, soy products, kiwi and other foods and fruits that are rich in vitamins and water to replenish the nutrients needed by the body. 2. Drugs to prevent wound infection and reduce edema: After anal fistula surgery, you can follow the doctor’s instructions to choose metronidazole tablets, cefradine capsules, cefixime tablets and other drugs to prevent infection of the affected area. Or take grass carpenter’s rhinoceros infusion tablets, Diosmin tablets, lactulose oral solution and other drugs to reduce edema and pain. In daily life, we should pay attention to drink more water to keep stool softening, warm water sitz bath, avoid spicy and stimulating food intake, avoid prolonged sedentary, if there is discomfort after the operation, it is recommended to consult a doctor in time to give diagnosis and treatment.