Both laryngoscopy and CT can be used for clinical diagnosis, but the choice of which test to use depends on the type of disease or the direction in which the disease is focused, and they are not completely interchangeable. Laryngoscopy is a diagnostic and therapeutic test that can be used to visualize laryngeal lesions. Laryngoscopy can visually observe the presence of redness, swelling and secretion on the mucosal surface or the surface of the lesion, the presence of tumor growth, the shape and size of the tumor and the relationship with the surrounding tissues. At the same time, pathological sampling of the lesion site can be performed, which provides convenience for later pathological laboratory tests. CT examination is non-invasive and is mainly an anatomical cross-sectional analysis of the nature of the lesion, which can reveal the various layers of the examination site and the deeper lesions in the soft tissues of the larynx. For example, if a patient has a laryngeal tumor lesion, the relationship between the lesion and the surrounding area can be examined to determine whether it is invading a vital organ. Patients should be aware that CT examinations are associated with a certain amount of radiation and should be carefully chosen for women who are preparing for pregnancy or during pregnancy. It can be seen that laryngoscopy and CT have their own advantages, if you need to check the throat, you can choose the appropriate examination method for diagnosis and treatment according to your condition under the guidance of your doctor, do not choose blindly by yourself.