In the early stages of tracheal stenosis, there may be no obvious symptoms, but there may be coughing and shortness of breath, which may worsen and lead to dyspnea. In the early stages of tracheal stenosis, if there is no respiratory infection, there are usually no obvious symptoms, but coughing and shortness of breath may occur when there is a lot of exercise. If tracheal stenosis is combined with a respiratory infection, the symptoms of airway obstruction will worsen, and shortness of breath, dyspnea or even asphyxiation may occur, resulting in death. The main causes of tracheal stenosis are compression of adjacent vessels, growth of tissue in the trachea, foreign bodies in the trachea, and infection. If symptoms related to tracheal stenosis occur, you should go to the hospital in time to clarify the cause of tracheal stenosis and target treatment.