The methods of throat examination are as follows: 1. Direct observation: the subject sits, relaxes and opens the mouth naturally, and lightly presses 2/3 of the tongue with a tongue depressor to observe whether there is congestion, ulceration or new organisms in the mucosa of the oropharynx, whether there is collapse or clefting of the soft palate, and whether the bilateral movement is symmetrical, whether the uvula is too long, and whether there is congestion, edema and ulceration in the frontal arch of the tonsils and frontal lingual arch bilaterally. 2. Indirect laryngoscopic observation: use gauze to Wrap the front 1/3 of the tongue, pinch the front part of the tongue with the left thumb or middle finger and pull it forward and downward, hold the index finger against the upper lip for fixation, hold the indirect laryngoscope with the right hand, and heat the mirror slightly to prevent fogging. When confirming that it is not hot, put the indirect laryngoscope into the patient’s oropharynx and examine the tongue root, epiglottis valley, epiglottis lingual surface, posterior laryngopharyngeal wall and lateral wall first, then tell the patient to make eek sound and make the epiglottis lift to expose the vocal folds, at this time, we can observe the bilateral vocal folds, vocal folds, ventricular folds, aryepiglottic area, interaryepiglottic area and aryepiglottic folds.