One-step　laser　direct　writing　(LDW)　is　becoming　an　effective　method　in　the　production　of　conductive　circuits　on　the　surface　of　polyimide　(PI).　The　laser　radiation　can　significantly　improve　the　conductivity　of　the　polymer　and　result　in　potential　applications　in　the　microelectronics　and　sensing.　We　studied　the　effect　of　laser　power　and　scanning　speed　on　the　conductivity　of　the　LDW　generated　circuit　with　assistance　of　scanning　electron　microscope,　Raman　spectroscopy　and　electrochemical　workstation.　Although　laser　direct　writing　technique　can　greatly　improve　the　conductivity　of　polyimide　films,　there　is　a　certain　limitation　of　this　improvement.　Therefore,　we　adopted　two　methods　to　further　enhance　the　electrical　conductivity:　(1)　PI　surface　coated　with　metal　ion　solution　to　form　the　surface　composite　of　metal　and　carbonated　structure　through　laser　irradiation;　and　(2)　the　addition　of　metal　nano-plates　and　graphene　oxide　into　poly　(amic　acid)　(PAA)　solution　as　the　precursor　of　polyimide.　The　results　show　that　the　latter　is　more　effective.　The　conductive　circuit　on　polyimide　generated　by　LDW　can　be　used　as　flexible　and　wearable　sensors　to　monitor　the　change　of　stress　and　as　a　platform　for　other　sensing.