There are three general categories of factors that cause nasopharyngeal cancer, as follows: 1. Genetic susceptibility: There is a correlation between the performance of human leukocyte antigens and the risk of nasopharyngeal cancer. The polymorphism of their genes can lead to the occurrence of nasopharyngeal carcinoma.2. EBV infection: EBV infection is seen in most nasopharyngeal carcinomas and the incidence of nasopharyngeal carcinoma is also high, so EBV infection is also one of the main triggering factors of nasopharyngeal carcinoma.3. Environmental factors: Highly prevalent in areas with dietary habits, usually pickled products or salted fish and pickled vegetables, like Guangdong Province, etc. Smoking, nitrite use, and occupational exposure can lead to the occurrence of nasopharyngeal carcinoma.