After the anal fistula band fell off the night is still very painful, it depends on whether the time of the band is normal, if it is normal shedding, you can use pain medication for treatment can be. Anal fistula hanging line surgery is from the anal fistula to the external mouth placed rubber band and ligation tightening, the use of rubber band contraction, making in the rubber band child circle of tissue, gradually ischemic necrosis after slow cutting, at the same time the anal fistula channel from deep and shallow gradually healing. The rubber band needs to be pulled every day after anal cleansing, regular follow-up, by the surgeon to be gradually tighten the rubber band. Under normal circumstances, the chronic cutting of the rubber band takes about 7-10 days, if the patient’s skin band shedding time within the normal range, the pain is a normal phenomenon, you can follow the doctor’s instructions to use such as diclofenac sodium suppository or lidocaine gel and other drugs for treatment, and at the same time you can use lukewarm water for sitz bath. If the patient in the use of drugs for a period of time, the pain symptoms are still not relieved, or even aggravated phenomenon, can be considered to have other reasons exist, such as trauma infection, anal fistula recurrence, anal fissure, etc., it is recommended that the patient should consult a doctor in a timely manner, to clarify the diagnosis, to give targeted treatment.