When　the　polyvinylidene　fluoride　(PVDF)　disk　is　irradiated　by　the　laser　with　a　wavelength　of　248　nm,　the　surface　electric　conductivity　of　the　sample　is　increased　by　nine　orders　of　magnitude　to　10-4　(Ω·cm)-1　and　the　electric　conductivity　of　initial　sample　before　laser　irradiation　is　10-13　(Ω·cm)-1.　With　adjusting　the　laser　energy　density,　gas　atmosphere,　pulse　frequency　and　the　number　of　laser　shots,　the　optimal　technological　conditions　of　laser　irradiation　was　obtained.　Based　on　the　analyses　of　X-ray　diffraction,　Raman　spectroscopy　and　micrographs　of　the　samples,　we　conclude　that　laser　breaks　the　C-F　bond　leaving　graphite　on　the　surface　of　sample,　which　leads　to　the　transition　from　an　insulator　to　a　conductor.