This is a prospective, multi-center, phase II study (NCT04106180). Eligible patients (pts) were advanced EGFR/ALK negative NSCLC pts who had failed first-line standard chemotherapy….Partial response occurred in 7 and stable disease in 5 pts, the confirmed ORR was 35%. Median PFS was 6.9 (95% CI, 2.76-NA) months with 12 events and 1-year OS rate was 75.0% (95% CI, 58.2%-96.6%)....Triple combination of Sintilimab, SBRT and GM-CSF is safe and shows promising efficacy as a novel second-line treatment for advanced EGFR/ALK negative NSCLC.