We　report　herein　a　facile　strategy　to　synthesize　trifluoromethylated　gamma-lactams　through　trifluoromethylcarbonylation　of　N-cyano　alkenes　using　readily　available　CF3SO2Na　as　the　CF3　radical　source.　A　range　of　trifluoromethyl-containing　gamma-lactams　was　obtained　in　good　yields.　This　transition-metal-free　protocol　is　demonstrated　with　mild　conditions,　broad　substrate　scope,　good　functional　group　tolerance,　convenient　reagents,　and　an　easy-to-handle　operating　system.