The application of many technologies can assist doctors to more accurately and quickly help patients determine the condition and treat diseases, and laryngoscopy is one of them. Laryngoscopy is a content and examination method in functional examination department. The use of laryngoscopes is necessary because the position of the larynx is deep and its physiological mechanism is relatively complex and cannot be directly observed with the naked eye, so some special examination methods, that is, laryngoscopes, should be used when examining the larynx.