Lung cancer stage 2b belongs to the early and middle stage of lung cancer, which is more serious, and will seriously jeopardize the life if it does not cooperate with the treatment in time and develops to the late stage. Lung cancer is a common malignant tumor of respiratory system, and the occurrence of the disease is related to smoking, environment, heredity and other factors. Stage 2b represents the maximum diameter of the tumor is 5~7 cm, or it involves the surrounding chest wall, etc.; there is no metastasis to lymph nodes and no distant metastasis. This period belongs to the early middle stage, and it is necessary to actively go to the hospital for consultation. Surgery, radiotherapy and other therapies can be carried out according to the condition, and after active treatment, the five-year survival rate of patients with stage 2b lung cancer is about 45%, so it is enough to actively cooperate with the treatment. However, if they are not treated in time, they will soon progress to the terminal stage, which will seriously affect their lives and quality of life.