Nowadays, lung cancer is no longer the sole preserve of the elderly; young people also get lung cancer, and some of them even get lung cancer even after a lifetime of non-smoking. Some young people have a family history of cancer, and these young people have special sensitivity to carcinogenic stimuli, which creates the conditions for cancer rejuvenation. Young people’s cells divide and multiply vigorously and are vulnerable to attack by carcinogens. Although a history of smoking is a high incidence factor for lung cancer, it does not necessarily mean that smoking will lead to lung cancer. In recent years, a large amount of chemical pollution and automobile exhaust emissions have caused serious air pollution, so that toxic substances are inhaled by human body, like EBV infection and tuberculosis scarring are also causes that people can easily ignore. How long can patients with advanced lung cancer live? Once diagnosed with “advanced lung cancer”, many patients are in infinite panic and feel that death is coming. According to statistics, in lung cancer treatment, only 15% of lung cancer patients can be treated by surgery to remove cancer cells; about 5% of lung cancer patients cannot be operated due to the limitation of tumor growth site; and more than 70% of lung cancer patients cannot be treated by surgery due to the lack of timely detection of the disease. As represented by stage IV lung cancer, the survival period is about 3-6 months if not treated in time. In fact, there is no generalization on how long a patient with advanced lung cancer can live. As long as patients with advanced lung cancer are actively treated, they can extend their survival. Lung cancer is mainly divided into non-small cell lung cancer and small cell lung cancer. The survival rate of non-small cell lung cancer patients five years after surgery is 44.5% for stage I, 36.1% for stage II, and less than 30% for stage IIIA. For early-stage small cell lung cancer patients, if surgery is combined with biotherapy and radiotherapy, the survival rate can reach 65% in three years and 50% in five years without lymphatic metastasis. However, if lymphatic metastasis is present, the survival rate will decrease by 15-30 percentage points.