If the hole is still unrecovered 3 months after the hanging operation of anal fistula, there may be traumatic foreign body, infection, diabetes and other conditions, and the patient can be relieved by medication, surgery and other ways. 1. Traumatic foreign body: for patients who have not recovered from traumatic foreign body, they should go to the hospital for surgery to clean up the wound, remove the foreign body and promote wound healing. 2. Infection: for postoperative wound infection or pus drainage is not smooth, you can use iodophor, isacridine solution and other antiseptic solution to disinfect the wound, but also under the operation of a professional doctor, the abscess of the occurrence of infection can be drained. 3. Diabetes: If there is diabetes, high blood sugar, will affect the healing of the postoperative wound, patients need to regulate blood sugar in time, if necessary, under the guidance of the doctor can use insulin, metformin and other drugs for standardized treatment to promote the healing of small holes and so on. It is recommended that patients strictly follow the doctor’s instructions to use medication, actively cooperate with the doctor’s treatment, pay attention to postoperative wound care in life, if more than 3 months than the small hole is still unable to heal, you need to go to the regular hospital as soon as possible to find out the cause and give treatment.