Ear, Nose, Throat, Head and Neck Surgery is a comprehensive secondary discipline that can be divided into otology, rhinology, laryngology, and head and neck surgery, mainly looking at diseases about the ear, such as otitis media, secretory otitis media, deafness, and tinnitus. Diseases of the nose, such as sinusitis, nasal polyps, rhinitis, nasal swelling, and nasopharyngeal swelling. Some diseases of the larynx, such as hoarseness, vocal cord polyps, vocal cord nodules, laryngeal tumors, laryngeal swellings, tonsillitis. There are also diseases of head and neck surgery, such as laryngeal tumor, head and neck tumor, thyroid tumor, and thyroid gland diseases, in general, ENT head and neck surgery is a comprehensive secondary science.