This　paper　describes　using　KrF　excimer　laser　for　fabricating　conducting　pattern　on　Polyvinylidene　fluoride　(PVDF)　substrates.　Any　graph　is　machined　by　direct　laser　writing　technique.　Furthermore,　the　defect　structure　is　prepared　on　this　patterned　surface　where　laser　etching　is　carried　out.　Mask　patterning　is　used　to　select　the　conducting　area　when　the　patterned　sample　is　irradiated　by　KrF　excimer　laser.　As　a　result,　the　conducting　layer　is　controlled　automatically　and　generated　rapidly　on　the　surface.　Conductivity　on　the　order　of　10-1　Ω-1cm-1,　increasing　up　to　12　orders　of　magnitude,　is　obtained　under　the　laser　energy　density　form　44mJ　/cm2　to　112mJ　/cm2.　The　surface　morphology　and　chemical　constitution　of　modified　surfaces　investigated　by　scanning　electron　microscope　(SEM),　and　Fourier-Transform-Raman　spectroscopy　(FT-Raman).Based　on　the　results,　the　possible　mechanisms　of　conducting　layer　formation　are　discussed.