When we have symptoms such as throat discomfort, foreign body sensation, difficulty in swallowing and hoarseness, we need to perform laryngoscopy to identify the cause of the disease. Because of the deep site of larynx and complex physiological structure, the examination needs to be done with the help of some special methods. The laryngeal examination mainly includes external examination of larynx, indirect laryngoscopy, direct laryngoscopy, fiberoptic laryngoscopy, laryngeal endoscopy, laryngeal dynamic microscopy, laryngeal electromyography, laryngeal function examination and laryngeal imaging. Since there are many types of laryngoscopy, it is a serious test for doctors to choose laryngoscopy! Although there are many categories of laryngoscopy, the most commonly used and easiest examination method in hospital clinic is indirect laryngoscopy, which means placing the indirect laryngoscope on the oropharynx and observing the image of the larynx in the mirror, this examination method can not only examine the larynx, but also observe part of the laryngopharynx. 1, indirect laryngoscopy can examine the root of the tongue, lingual tonsils, epiglottis valley, posterior laryngopharyngeal wall, lateral laryngopharyngeal wall, lingual surface of epiglottis and free edge, spoon cartilage and pear-shaped fossa on both sides for any abnormalities. 2.During the indirect laryngoscopy, the patient can make the sound of “clothes” and make the epiglottis lift up, at which time the epiglottis surface, aryteno-epiglottic folds, interarytenoid area, ventricular band and vocal folds and their closure can be seen. 3.Under normal circumstances, the larynx and laryngopharynx are symmetrical on the left and right sides, and there is no fluid in the pyriform fossa, and the mucous membrane is light red. The vocal folds are in the shape of white strips, and when the vocal folds are inward and close to the midline when the sound is made, and when deep inspiration is made, the vocal folds are outward to both sides respectively, and at this time the subglottic area or part of the cartilage ring in the trachea can be seen through the vocal folds. During laryngoscopy, the mucous membrane color and the presence of congestion, edema, thickening, ulceration, scar, neoplasm or foreign body should be noted, and the vocal folds and arytenoid cartilage activity should be observed. If indirect laryngoscopy is difficult, other laryngoscopic examinations are available, such as direct laryngoscopy, fiberoptic laryngoscopy, laryngeal endoscopy, dynamic laryngoscopy, laryngeal electromyography, laryngeal function tests and laryngeal imaging. In short, we should find out the specific lesion of the larynx as soon as possible, so that we can take corresponding treatment measures to make it return to normal as soon as possible, so as not to affect the normal life and work.