There are 300 million smokers in China, and 740 million people are exposed to second-hand smoke. Along with the aging process of China’s population, the process of urbanization and industrialization in rural areas and the intensification of urban modernization, air pollution and environmental pollution are becoming increasingly serious, lung cancer incidence and death will further climb, and it is expected that by 2020 the number of lung cancer incidence in China will exceed 800,000 and the number of deaths will approach 700,000. Wang Longde, president of the Chinese Society of Preventive Medicine, said at the 7th China Lung Cancer North-South Summit Forum that in recent years, lung cancer has ranked first in the incidence of malignant tumors in China’s tumor registry for many years, ranking first in malignant tumor incidence in men and second in women. Every year, the number of lung cancer cases in Chinese men is 2.1 times that of women, and the number of deaths from lung cancer is 2.2 times that of women. In recent years, 82% of the lung cancer patients treated at the Cancer Hospital of the Chinese Academy of Medical Sciences had a history of smoking, including 91% of squamous carcinoma, 74% of adenocarcinoma patients, and 82% to 86% of other types of patients had a history of smoking. This is a side note that the steady increase in lung cancer mortality in China over the past 40 years is inextricably linked to the dangers of tobacco use. This is fully consistent with the main attribution of the international epidemiological trend of lung cancer. Comprehensive tobacco control is an important prevention strategy advocated globally to reduce the harm of chronic diseases such as tumors, and it is also an important measure with the best input-output benefit for lung cancer prevention. Wang Longde said that medical personnel occupy an important position in tobacco control efforts, and he hopes to vigorously promote smoking cessation among medical personnel and play an important role in discouraging patients from quitting. As the top priority of cancer prevention and control in China, the key to lung cancer prevention is “early detection, early diagnosis and early treatment. “I agree that most women in China do not smoke.” Zhao Ping, vice president and secretary-general of the China Cancer Foundation, said that lung cancer prevention requires more prevention, rather than waiting until it is “uncomfortable” and then going to the hospital for examination. Lung cancer prevention and treatment requires attention to three sources: one is smoking, the second is air pollution, the third is related to occupational exposure, China also needs to pay attention to kitchen fumes pollution.