Generally, internal anal fistula can be treated conservatively through medication and sitz bath treatment. If the conservative treatment can not improve the symptoms, it is recommended to go to the hospital as soon as possible for further diagnosis and treatment. 1. medication: anal fistula can lead to the emergence of local abscesses, ulcerative lesions, local purulent secretions increase the possibility of local application of anti-inflammatory ointment, you can also take some anti-inflammatory drugs to conservative treatment. Such as erythromycin ointment, hemorrhoid cream can be applied, cefixime, amoxicillin and other drugs orally. Drugs should be applied under the guidance of a doctor. During the treatment period, it is recommended to eat more fresh vegetables and fruits, avoid eating spicy and stimulating food, keep the bowel movement smooth, avoid sitting for a long time, laborious, and have more rest. 2. Sitz bath treatment: through the drug sitz bath treatment method can effectively promote local blood circulation, can relieve the symptoms of anal fistula, reduce local purulent secretion or anal itching symptoms, such as warm water local cleaning, and then use 1:5000 potassium permanganate solution local sitz bath treatment. Conservative treatment of internal fistula, patients need to actively cooperate with the treatment, such as anal fistula symptoms can not be effectively controlled, but also need to consider surgical treatment, so as not to delay the condition.