Abstract
In recent years, squamous non-small cell lung cancer (NSCLC) didn't progress much in chemotherapy or target therapy. However, immunotherapy has made breakthroughs in treating squamous NSCLC. Immunotherapy includes two main broad classes of immune checkpoint inhibitors and therapeutic vaccines. Immune checkpoint inhibitors, including anti cytotoxic T-lymphocyte associated antigen 4 (CTLA-4) and anti programmed death receptor 1 (PD-1) antibodies, have been tested in the phase II/III clinical trials and have demonstrated promising outcomes. Immunotherapy will become an important treatment for squamous NSCLC.