OBJECTIVE: To describe a therapeutic option for subglottic stenosis in children. CASE REPORT: A male patient, 4 years old. Mother says that the patient had peritonitis of appendicle origin for four months in which require admission to the Intensive Care Unit Pediatric Respiratory Mechanics with assistance for 10 days, once ex-tubaton has severe difficulty breathing, which was held by an emergency tracheotomy, outside service. NFC is held, mobile vocal cords, there is a 1 cm stenosis subglottic laryngeal light of 10%. Performs up Laryngo-tracheoplasty with interposition of cartilage through the posterior and anterior autologous costal, with good postoperative outcome. CONCLUSION: laryngotracheal reconstruction with autologous costal cartilage is a valid option as a treatment for subglottic stenosis. The meticulous postoperative care is essential, particularly to prevent accidental extubation.