A　redox　neutral　radical-relay　cobalt-catalyzed　intramolecular　C-H　fluorination　of　N-fluoroamides　featuring　the　in　situ　formed　cobalt　fluorides　as　the　latent　radical　fluorinating　agents　is　reported.　Moreover,　the　reactivity　of　such　a　cobalt　catalysis　could　be　diverted　from　C-H　fluorination　to　amination　by　engineering　substrates＇　conformational　flexibility.　Preliminary　mechanistic　studies　(UV-vis　spectroscopy,　cyclic　voltammetry　studies　and　DFT　calculations,　etc.)　support　the　reaction　proceeding　a　redox　neutral　radical-relay　mechanism.