The examinations that can be done for nasopharyngeal cancer mainly include the following four aspects: firstly, detection of EBV: there are two main ways, one is to detect EBV antibody in serum, and the other is to detect EBV free DNA in plasma.Secondly, indirect nasopharyngoscopy and endoscopy: indirect nasopharyngoscopy is the most basic and economical examination means essential to the diagnosis of nasopharyngeal cancer, and the endoscopy of nasopharynx is gradually becoming one of the routine examination methods for nasopharyngeal diseases. It has become one of the routine examination methods for nasopharyngeal diseases. Its advantage is that it can directly see the lesions in the nasal cavity or nasopharyngeal cavity, especially the subtle lesions located in the depth of the pharyngeal crypts and the pharyngeal opening of the Eustachian tube, and it can directly take biopsy by forceps. Third, pathologic examination: biopsy of the primary foci and cervical lymph nodes for pathologic examination. Fourth, imaging examination: including CT and magnetic resonance, and magnetic resonance is more valuable than CT for the diagnosis of nasopharyngeal cancer and understanding the scope of lesion invasion.