A 22-year-old muscular karate player was diagnosed to have a tracheal tumor with a diameter of 2.8 cm that existed 2 cm under the glottis and occupied 60% of his trachea. He was scheduled for trachea resection and construction surgery. After awake-fiber intubation, anesthesia was maintained by continuous infusion of propofol and remifentanil, together with thoracic epidural anesthesia (T4-5). After 431 minutes of surgery, 50 mm of trachea was rejected. To prevent him from extending his neck, the surgeon placed stay-sutures between the patient's chin and chest wall. Twenty minutes after the termination of propofol and remifentanil infusion, the patient became awake and was extubated. Subsequently, although the body temperature was 37.6 degrees C, excessive shivering occurred and his neck was nearly extended. We immediately injected 0.8 mEq of magnesium sulfate and 70 mg of pethidine. It took almost 10 minutes to stop shivering completely, and the patient became too sedated and required noninvasive positive pressure ventilation overnight. We speculate that intraoperative remifentanil infusion induced severe shivering in this case. Shivering after remifentanil infusion can be a fatal complication in tracheal resection and construction surgery, especially in muscular patients.