Definition and treatment of laryngotracheal stenosis (cicatricial stenosis of larynx and trachea) is a pathological condition in which the larynx and/or tracheal lumen becomes narrowed due to intraluminal scarring and its main physiological function is impaired. It is a common condition of chronic laryngotracheal obstruction, mostly caused by trauma. Treatment of laryngotracheal stenosis is very tricky and often referred to as intractable laryngeal stenosis, which is not only difficult to treat but also takes a long time. I. Tracheotomy: It is mainly to solve the patient’s breathing difficulty and is not a fundamental treatment. II. Dilatation therapy: That is, the stenosis is gradually dilated with different types of dilators via the oral cavity under a direct laryngoscope or retrograde upward through a tracheotomy, usually once every 7 to 10 days. The dilatation method is only suitable for those with mild stenosis, without cartilage stent deformation, displacement or defect. Laryngotracheoplasty: The larynx and/or trachea is routinely incised, and depending on the scar formation, the scar can be excised submucosally and a silicone rubber T-tube placed for support. If the stenosis is not severe and the scar is long and stable, the larynx or trachea can be incised without touching the scar, and then the larynx or trachea can be embedded with the tipped hyoid bone and the cartilaginous rib cartilage, and the airway lumen can be supported by a finger sleeve filled with iodomimetic gauze (usually the support can be removed in about 10 days). Those who have a silicone rubber T-tube support are often required to wear the tube for several months to 2 years.