Prevention of Locally Advanced NSCLC Radiotherapy Pneumonia by Inhaling Beclomethasone Propionate

Inclusion Criteria: 1. The subjects understood the requirements and risks of the study fully and signed the informed consent form. 2. Aged between 18 and 70 years; 3. Histologically or cytologically confirmed diagnosis of locally advanced non-small cell lung cancer. 4. All of these patients have pointers to radical radiation and can't be treated surgically. 5. ECOG PS of 0-2; 6. Women of childbearing age had negative pregnancy tests and were willing to accept drugs or intrauterine contraception, while men of childbearing age were willing to accept contraception voluntarily. 7. Adequate hematologic function: Peripheral blood neutrophil count \> 2000 cells / uL, Platelet count \> 100\*109 / L; Hemoglobin \>9.0g/dL; 8. Blood total bilirubin \< 2 times normal upper limit, blood AST and ALT ≤ 2. 5 times normal upper line; 9. Inosine clearance ≥ 60ml / min; 10. Life expectancy of at least 12weeks. Exclusion Criteria: 1. With severe or uncontrolled systemic diseases; 2. With a history of asthma, systemic immune diseases, such as the need for long-term hormone treatment in patients; 3. The lung function decreased obviously; 4. Those receiving targeted therapy or biological therapy at the same time; 5. Allergic to beclomethasone propionate; 6. Pregnant or lactating women; 7. Accompanied by uncontrolled diabetes, need to take oral hormone treatment of sarcoidosis and vasculitis, lupus erythematosus and other immune diseases; 8. In recent 5 years has suffered from other tumors: cervical cancer, basal cell carcinoma of the skin, and so on; 9. The estimated survival time was less than 3 months.