Nasopharyngeal cancer is a malignant tumor of the nasopharynx that occurs in many countries and regions of the world, with a low overall incidence, but a high incidence in Southeast Asia. Nasopharyngeal cancer is also one of the common malignant tumors in China. Nasopharyngeal cancer occurs in the nasopharynx between the nasal cavity and the oropharynx, with the top part being the most common, followed by the lateral wall and anterior wall, and the bottom part the least. The anatomical location of nasopharyngeal cancer is hidden, and the symptoms and signs are variable, which can be easily ignored by patients and misdiagnosed by medical personnel. The main symptoms of nasopharyngeal carcinoma include enlarged lymph nodes in the neck and epistaxis, nasal congestion, headache, tinnitus, deafness, aspiration of blood, drooping eyelids, facial paralysis, difficulty in swallowing, regurgitation of food and many kinds of cranial nerve damage. There are many clinical symptoms related to nasopharyngeal carcinoma, but if one of the following symptoms occurs, you should be alerted to the possibility of developing nasopharyngeal carcinoma. 1.Uncertainly occurring tinnitus, stuffy ear, ear pain or deafness, especially in one ear, and the above symptoms are progressing rapidly and general treatment is ineffective. 2.Recent occurrence of neck lumps, especially deep lumps with rapid growth, fusion and fixation, unsmooth surface, mild pressure pain, and ineffective treatment according to inflammation or tuberculosis. 3.Recently suffered from unilateral catarrhal otitis media, especially the fluid accumulation in the middle ear cavity is more, after timely and reasonable treatment, there is no significant improvement, and the symptoms continue to worsen. 4.Recent nasal congestion, bleeding nasal discharge, especially bright red bloody snot or hemoptysis after getting up in the morning after aspiration, which is ineffective after general treatment. 5.Recent unexplained persistent and intractable headache on one side, which gradually worsens, and oral analgesics are ineffective. 6.Recent unexplained cranial neuropathy, manifested as limited eye movement, inability to abduct, headache, unfavorable swallowing, hoarseness, coughing and choking, and weakness of shoulder lifting. 7.Recent unilateral eye discomfort, lacrimation, eye astringency, vision loss, diplopia, outward displacement of the eyeball, and protrusion of the eyeball that are not caused by local lesions. 8.Recently suffered from polymyositis or dermatomyositis, with symptoms such as inconvenience in lifting the head, difficulty in swallowing, indifference in expression, and clinical manifestations of lesions mainly in the facial muscle group, anterior and posterior cervical muscle group, and pharyngeal muscle group.