For nasopharyngeal diseases, nasopharyngoscopy and CT scanning of the nasopharynx have different purposes and focuses and are not comparable. 1. During nasopharyngoscopy, doctors can directly observe nasopharyngeal foci with naked eyes, and can extract the foci of suspicious foci visible on the surface of the mucosa under direct vision for further pathological and histological examination. Histologic examination is the gold standard for diagnosing the benign or malignant nature of the disease. 2. CT examination belongs to imaging examination, doctors need to judge the situation of nasopharyngeal lesions through CT imaging, without any trauma, can be dynamically reviewed, and for the surface of the lesions without obvious characteristic changes, CT examination, especially enhanced CT, has the characteristic advantage of distinguishing different tissue density. For nasopharyngeal examination, nasopharyngoscopy combined with CT scanning examination is often chosen for comprehensive evaluation if accurate judgment of the condition is needed.