Nasopharyngoscopy cannot directly detect early nasopharyngeal cancer, but should also be used with the help of EBV serologic examination, CT, MRI, pathologic biopsy and other related examinations to make a clear diagnosis. Nasopharyngoscopy can usually observe clearly whether the tissues in nasopharyngeal area are in a normal state or not, and in general, its result will not directly indicate whether there is nasopharyngeal cancer or not. Many patients with early nasopharyngeal cancer do not have obvious symptoms, and granulomatous lesions can be observed through nasopharyngoscopy, but this does not lead to a clear diagnosis. EBV serologic examination can be considered after nasopharyngoscopy because some nasopharyngeal cancers are related to EBV infection. Imaging tests such as CT and MRI can also be performed to determine the location and extent of the tumor. Finally, pathological biopsy can be performed to clearly diagnose is the nature and type of the tumor, etc.. If you want to confirm the diagnosis of nasopharyngeal carcinoma, it is recommended to go to professional hospitals to improve the relevant examination under the guidance of specialized doctors to make a clear diagnosis, so as to avoid delaying the condition.