There are a lot of people with anal fistula for twenty or thirty years in the clinic, but the principle of treatment for anal fistula is to choose the treatment method of surgery in time. For simple anal fistula, the symptoms are not very obvious, and there is slight pain and discomfort in the paranal area occasionally, you can take oral Xinhuang tablets to clear the heat and detoxify the toxin, and observe the clinical symptoms. However, for patients with repeated painful swelling and pus flowing beside the anus and recurrent anal fistula, early surgery is recommended because repeated painful swelling and pus flowing beside the anus can stimulate local tissue proliferation and long time local tissue proliferation is easy to be malignant.