Nasopharyngeal cancer is a highly prevalent cancer unique to Guangdong and has a very high mortality rate. The main reason is that people lack the knowledge of nasopharyngeal cancer prevention and treatment, so that the disease is found and treated only at an advanced stage, which results in the loss of life and money. I. What is nasopharyngeal cancer? Nasopharyngeal cancer is a malignant tumor growing in the back of the nasal cavity and above the oropharynx, which is not visible to others in the early stage, and there are no conscious symptoms or symptoms that are not easily perceived by oneself. At that time, 70% – 80% of the cancer is already in the middle and late stages. What are the symptoms of nasopharyngeal cancer? Of course, it can be accompanied by ear blockage and tinnitus as its growth site varies. When the tumor gradually grows and develops, it can often appear as aspirated blood sputum or persistent ear blockage and tinnitus, and it can also appear as painless lumps (hard nodes, which are often regarded as plague, scrofula, rat plague and old rat sores) on both sides of the neck. Further development of the disease may also lead to hearing loss, headache, nasal congestion, slanted eyes, vision loss, distorted mouth, difficulty in swallowing, and even metastasis to liver, lung and bone. The purpose of nasopharyngeal cancer special examination or census is to detect nasopharyngeal cancer without any self-perceived symptoms, so as to strive for the best treatment effect. What are the causes of nasopharyngeal cancer? It is known that the occurrence of nasopharyngeal cancer is related to a combination of factors such as genetics, EBV, environmental carcinogens and autoimmunity (resistance). Therefore, if you have a family history of cancer, a family history of nasopharyngeal cancer or a positive test for EBV, you do not need to worry about this to avoid affecting your work, study and life. As for whether you have antibodies to the BE virus, you can find out if you have 2-3 drops of blood from a test or census. Environmental carcinogenic and carcinogenic substances are more complicated and can only be changed by scientific and economic development and cultural improvement. Given the causes of nasopharyngeal carcinoma and current medical knowledge, testing for the presence of antibodies to the EBV is the simplest, most practical and effective way. It is very meaningful for the prevention of this disease to strive for early detection, early diagnosis and early standardized treatment (three early). Can nasopharyngeal cancer be cured? At the present level of medical diagnosis and treatment, nasopharyngeal carcinoma is one of the malignant tumors with better treatment effect among all kinds of cancer, and it can be said with certainty that more than 90% can be cured with early detection, early standardized treatment, good psychological attitude and attention to medical care during recovery. It depends on the public to improve their awareness of self-care and to have regular specialist checkups or receive screening. V. How to detect nasopharyngeal cancer at an early stage? To detect nasopharyngeal cancer at an early stage is simple but not simple. To say “simple” means that according to the known medical knowledge, more than 85% can be detected at an early stage as long as people go to hospitals regularly for specialist examinations, physical examinations or take part in special examinations and censuses. To say “not simple” means that there is still a gap between hospitals at all levels in terms of equipment, experience, and technical level, and that the public does not have that much time to go to the hospital regularly (registration, queuing, waiting for results, and transportation to and from the hospital, etc.). Special examination or screening can facilitate the public and is a proven method to help them detect nasopharyngeal cancer at an early stage.