Two months after the anal fistula surgery, a lot of bleeding in the stool, most consider anal fistula recurrence, infection, healing is not complete and other factors lead to. 1. anal fistula recurrence: patients such as anal fistula 2 months after surgery is still bleeding, mostly consider the recurrence of the disease, patients are accompanied by pain, purulent secretions and other symptoms. 2. Infection: due to the location of the anus and the specificity of the function, the postoperative wound of anal fistula is susceptible to bacterial infection, inflammation stimulation of the wound bleeding. 3. incomplete healing: the patient’s condition is complex or postoperative medication change is not timely, resulting in the trauma is difficult to recover, after defecation, Nu struggle to tear the trauma and so on, further leading to the occurrence of bleeding symptoms after defecation. When the above symptoms occur, it is recommended that patients should go to the hospital for a detailed examination to clarify the cause of the disease, and then give appropriate treatment under the guidance of the doctor to avoid aggravation of the condition.