Laryngeal tinnitus is an abnormal respiratory sound emitted from the larynx. It is caused by the narrowing of the laryngeal airway due to various reasons, and is produced by the airflow through the narrowed lumen when breathing. Due to the age of onset and the different parts of the lesion laryngeal tinnitus characteristics are not the same. If the laryngeal tinnitus occurs in pediatric acute laryngitis, it is often accompanied by hoarseness, barking cough, and inspiratory dyspnea. Pediatric laryngitis, the onset of the disease is acute, the disease progresses quickly, the early laryngeal spasm is dominant. In acute respiratory obstruction, laryngeal stridor is a high shrill, high pitched laryngeal tinnitus accompanied by inspiratory depression of the soft tissues, hoarseness of voice, and more often than not cyanosis and other symptoms of hypoxia. In the case of recurrent laryngeal nerve palsy, there is mostly inspiratory laryngeal tinnitus, dyspnea after activity, and easy choking.