Pediatric tracheal stenosis first depends on the cause of tracheal stenosis, according to the cause of the different treatment methods. Tracheal stenosis is divided into the following categories: 1, sequelae caused by laryngotracheal injury; 2, due to laryngeal recurrent neuropathy or cricoarytenoid joints caused by the vocal folds fixed , tracheal pressure caused by tracheal cartilage softening. The common treatment methods are as follows: 1) medication to reduce the growth and hardness of the scar, which is not a good treatment. 2) surgical treatment such as laryngotracheal revision, laryngotracheal lumen reconstruction, laryngotracheal lumen enlargement, etc. The treatment of laryngotracheal stenosis includes the following: 1.