Survival of middle and advanced lung cancer cannot be generalized, middle and advanced lung cancer is usually divided into stage III and stage IV. The 5-year survival rate of stage III lung cancer patients is around 30%, while the 5-year survival rate of stage IV patients is less than 10%. Clinically, 5-year survival rate is usually used to evaluate the survival of tumor patients, and the 5-year survival rate of stage III lung cancer patients is around 30%. The pathologic types of lung cancer are non-small cell lung cancer and small cell lung cancer. The 5-year survival rate of stage III non-small cell lung cancer is about 30%, and the 5-year survival rate of stage III small cell lung cancer is about 10%. Patients with stage IV lung cancer have already developed distant metastases, losing the opportunity to undergo radical surgery, and can only take palliative treatments such as chemotherapy and radiotherapy. The 5-year survival rate of patients is usually less than 10%. Lung cancer in middle and late stages can alleviate symptoms and prolong survival through treatment, which includes surgery, chemotherapy, radiotherapy and targeted therapy, and it is recommended that patients cooperate with doctors for active treatment.