The incidence rate is related to smoking and environment: statistics show that the incidence rate of lung cancer in China has increased rapidly at an average annual rate of 5 times in recent years, and the incidence rate and mortality rate of lung cancer in men are the first among cancers; the incidence rate of lung cancer in women is the second after breast cancer, and the mortality rate is the first; among the whole population, the incidence rate and mortality rate of lung cancer are the highest among cancers. lung cancer patients. In addition, the incidence of lung cancer has shown a very obvious trend of lowering the age; 20 years ago, its peak incidence was after 60 years old, but now it is more prevalent in people around 50 years old, which is at least 10 years earlier. In the past, lung cancer patients under 40 years of age were rarely seen in clinical practice, and it is roughly estimated that 10-15 of lung cancer patients are now hospitalized, compared to 3-5 20 years ago. Passive smoking is also harmful: “Smoking is recognized as the most important factor leading to lung cancer in the international oncology community, and the earlier the age of smoking, the longer the smoking age, and the higher the daily The earlier you start smoking, the longer you smoke, and the more you smoke each day, the higher your risk of developing lung cancer. Studies show that the risk of lung cancer is 10 times higher in long-term smokers than in nonsmokers.” Passive smoking is equally harmful. Numerous studies at home and abroad have shown that women whose husbands smoke have at least a 5-10 times higher risk of lung cancer than those whose husbands do not smoke, and the more their husbands smoke and the longer they live with their husbands, the higher this risk is. Due to individual differences, the efficacy of the same treatment plan for the same patient with the exact same disease may vary greatly. Therefore, the treatment of lung cancer is individualized and should be tailored to the individual and the disease, taking into account various factors such as the patient’s condition, physical condition, smoking history, gender, age, biological and molecular biological behavior of lung cancer.