Low-level anal fistula requires surgical treatment to achieve a radical result. Anal fistulas are usually formed when the normal structure of the anal canal, the sinuses, become inflamed and lead to recurrent perianal abscesses, while low-level anal fistulas mainly refer to fistulas below the deeper layers of the external anal sphincter, that is to say, involving very little anal muscle. In the acute infection of anal fistula, conservative treatment can usually only modestly relieve the symptoms, so that the inflammation and infection can be controlled, to relieve local pain, swelling, pus and other symptoms. To cure the fistula, it is necessary to surgically remove the inflammatory fistula and internal and external orifices, so that the tissue is fresh and non-inflammatory state in order to be able to heal, commonly used in clinical anal fistula excision to treat low anal fistula, the therapeutic effect is good. Low anal fistula excision surgery, because of the anal canal muscle involved in less, relatively small surgical trauma, the impact on the anus is also very small, as long as the operation is properly handled, pay attention to postoperative change of medication and follow-up, the general recurrence of the chance is relatively small. After anal fistula surgery, pay attention to light diet, eat more vegetables and fruits containing high fiber and many vitamins, such as celery, cabbage, mushrooms, apples, pears, etc., avoid spicy and irritating food, such as garlic, mustard, onions, etc., to maintain a smooth bowel movement, perianal cleanliness and hygiene, trauma drainage and so on. After the low anal fistula surgery, adhere to the change of disinfection, actively cooperate with the treatment, regular outpatient follow-up, there are abnormalities in a timely manner to avoid recurrence.