Anal fistula surgery will gradually return to normal in about 3-6 weeks. If there is no good care and treatment is not complete, it is easy to recur, and after recurrence the condition is more complicated and the treatment time is longer. Anal fistula due to local pollution is more serious, accompanied by perianal abscess, the treatment needs to be combined with surgical treatment, and to change the medicine several times, in order to maintain local cleanliness based on strengthening dietary regulation. Therefore, the first time for the treatment of anal fistula should be strictly in accordance with the doctor’s arrangements, good dietary care and local medicine care, and strive for a one-time healing. Even after the healing, we should also do a good job of long-term dietary management to avoid recurrence or complication of other anorectal diseases.