Nasopharyngeal cancer may be caused by genetic factors, environmental factors, EBV infection and other reasons. 1. Hereditary factors: The occurrence of nasopharyngeal cancer is related to the genetic background of population or race. Nasopharyngeal cancer has certain genetic susceptibility. At present, genetic research finds that about 12% of nasopharyngeal cancer patients have family history. 2. Environmental factors:If you often consume food containing nitrosamines, smoke, inhale nickel, arsenic, chromium and its compounds for a long time, it may lead to cancer. 3. EBV infection: EBV has a very close relationship with nasopharyngeal cancer. If the human body is infected with EB virus but has poor immunity or clearing ability, it may lead to nasopharyngeal cancer. There are many factors leading to nasopharyngeal cancer. To prevent nasopharyngeal cancer in daily life, first of all, we should pay attention to avoiding the causative factors of nasopharyngeal cancer, so as to reduce the chance of developing nasopharyngeal cancer and maintain our health. Meanwhile, if you have any discomfort, you should consult the doctor in time for examination and treatment as soon as possible.