The recurrence of anal fistula is generally manifested as paranasal pus, itching, pain, localized lumps and other uncomfortable symptoms. 1. anal pus: the external mouth of the anal fistula repeatedly outflow of purulent secretion or bloody material, the amount of secretion outflow is related to the patient’s condition. 2. itching: due to the secretion of the anal opening material stimulation of the perianal skin, most of the local skin itching and other uncomfortable symptoms, and in severe cases, even the emergence of perianal eczema. 3. pain: anal fistula is an infectious disease, mostly manifested in local red, swelling, heat, pain and other symptoms. 4. Localized lumps: anal fistula is often manifested as a local cord-like hard lumps, in which the pus secretion is not smooth, may lead to the enlargement of the lumps. 5. Other: mostly due to poor drainage of anal fistula, resulting in acute attacks of local inflammation, accompanied by fever, fatigue, chills and other symptoms. It is recommended that patients with the above discomforts should consult the doctor in time and be given diagnosis and treatment as soon as possible to avoid delaying the condition.