The effect of lung malignant tumors after surgical resection needs to be combined with the stage of the disease, treatment methods and other comprehensive judgment, and the general 5-year survival rate after surgery is 5% to 70%. Lung malignant tumor, i.e. lung cancer, is a common malignant tumor of the respiratory system, which is mostly caused by smoking, environment, heredity and other factors. The main treatment method after diagnosis is comprehensive treatment mainly based on surgical resection. After treatment, there is a certain relationship between the specific prognosis of lung cancer patients and clinical stage. For example, after treatment, the five-year survival rate of stage I patients is about 70%, stage II is about 50%, stage III is about 15% and stage IV is about 5%. In addition, if patients have better physical condition and higher tolerance to treatment, they will have better efficacy and relatively longer survival period. Lung cancer patients are advised to visit regular hospitals in time and listen to the advice of professional doctors.