How many years can lung cancer live: First of all, it depends on what type it is. If it is small cell lung cancer, due to its high malignancy, it can rarely live longer than one year without standard treatment. If it is highly differentiated squamous carcinoma or adenocarcinoma, due to more drugs available for treatment, surgery, radiotherapy, targeted therapy, immunotherapy, interventional therapy, etc., the survival period is very long and can be more than 10 or 20 years. Secondly, it depends on the clinical stage. Early stage patients can survive for several years even without treatment, but in advanced stage, especially when brain metastasis, liver metastasis, extensive lung metastasis or combined with large amount of pleural effusion and pericardial effusion, the survival period is relatively short, and rarely exceeds three months without standardized treatment. Secondly, it depends on whether standardized comprehensive treatment can be done, and the survival of those who have done treatment is definitely much better than those who do not do any treatment or do not do standardized treatment.