Laryngoscopy does not take long, usually around 2 to 5 minutes. Laryngoscopy is a common examination in otorhinolaryngology, which is mainly used to check whether the surface structure of the laryngeal cavity is abnormal in shape and function of the tissue units. If indirect laryngoscopy is performed, the operation is relatively simple and the time needed will be shorter, about 2 minutes can be completed. If electronic laryngoscopy is performed, the operation will be more complicated and the time needed will be longer, but usually it can be completed in less than 5 minutes. Laryngoscopy is recommended to go to a regular hospital, the examination process should be carefully cooperate with the doctor, do not eat and drink within 2 hours after the examination, but also to eat a light diet, to avoid fatigue, if there is any abnormalities, should be timely to the hospital.