Main　observation　and　conclusion　A　method　for　photoinduced　NaI-promoted　radical　borylation　of　aliphatic　halides　and　pseudohalides　with　bis(catecholato)diboron　(B(2)cat(2))　as　the　boron　source　is　introduced.　The　borylation　reaction　is　operationally　simple　and　shows　high　functional　group　tolerance　and　broad　substrate　scope.　Preliminary　mechanistic　studies　suggest　that　the　reaction　proceeds　through　S(N)2-based　radical-generation　strategy.