Laryngeal cancer is one of the common malignant tumors of the head and neck, accounting for about 1% to 5% of the whole body tumors, with the age of onset mainly from 50 to 70 years old, with 65 to 70 years old as the high incidence, mostly in men. The incidence rate of laryngeal cancer in China is 3/100,000 in Shanghai, 5/100,000 in some cities of Liaoning Province, and about 40,000 people get laryngeal cancer nationwide every year. There are many factors that cause laryngeal cancer, mainly related to bad living habits, such as smoking and alcohol. Smokers have high risk of laryngeal cancer The occurrence of laryngeal cancer is basically related to smoking, and it is clinically found that almost all laryngeal cancer patients are smokers, and those who smoke more often and for a longer period of time have a higher chance of developing laryngeal cancer. The risk of laryngeal cancer in smokers is 3 to 39 times higher than that in nonsmokers, and the mortality rate of laryngeal cancer in heavy smokers is 20 times higher than that in nonsmokers. Tobacco contains a variety of carcinogens, of which PAHs generated during roasting have been considered to be the most important carcinogen. The PAHs previously thought to have no direct carcinogenic activity have been shown to be activated in the body by aromatic hydroxylases to become active end carcinogens, causing mutations in genetic material in cells. In addition, smoking can also lead to increased levels of interleukin-6 in the blood, potentially promoting tumor recurrence and increasing the risk of death. Timely medical consultation for hoarseness or throat discomfort The early symptoms of laryngeal cancer are complicated, not that a certain symptom is necessarily laryngeal cancer. Patients with laryngeal cancer who come to the hospital commonly present with hoarseness, foreign body sensation in the throat and sore throat, etc. Some patients also have symptoms such as blood in sputum, difficulty in breathing and difficulty in swallowing. Dr. Liang Fa-ya reminded that smokers who have hoarseness or throat discomfort for more than two weeks without improvement should go to the otorhinolaryngology department of regular hospitals for detailed examination in time. At present, the main treatment methods for laryngeal cancer are surgery and radiation therapy. For early stage laryngeal cancer, whether it is radiotherapy or surgery, the five-year survival rate can reach over 90%. There are many surgical methods among them. No matter which surgical method is used, patients can basically retain the function of larynx after completing the treatment, although the pronunciation is not as good as normal people, but it does not affect normal communication. In conclusion, the five-year survival rate after laryngeal cancer treatment is still satisfactory, especially in the early stage, and the results in the middle stage are also good. It is best to quit smoking at a young age. Laryngeal cancer is not contagious, and the process of a normal cell turning into a cancer cell is quite long, and once it happens, it is not easy to reverse. Therefore, it is necessary to ensure good and healthy living habits, specifically in daily life, to pay attention to not smoking, and it is better to quit smoking at a young age. Quitting smoking after middle age can reduce the possibility of developing laryngeal cancer, but it is still higher than non-smokers. In addition, it is important to control alcohol consumption, especially not to abuse alcohol. In addition, it is important to pay attention to the treatment of precancerous lesions. Some people diagnosed with laryngeal white spot do not pay attention to it, and it may develop into laryngeal cancer if it is allowed to develop without intervention. Secondly, we should prevent air pollution and keep the air at home ventilated. Industrial waste gas pollution, such as sulfur dioxide, can induce cancer. Dr. Liang Faya reminded that it is necessary to pay attention to rest, exercise properly and keep a good state of mind and mood.