Alloying　technique　as　an　ancient　and　practical　instrument　has　been　a　diverse　fabricator　for　desirable　properties　of　materials.　Herein,　utilizing　the　alloying　engineering,　we　have　developed　a　two-step　process　for　hybrid　graphene-NiW　nanofibers　(Gr-NiW　NFs)　transparent　electrodes.　Further　analysis　reveals　that　alloying　NiW　NFs　significantly　improve　their　mechanical　performance,　reducing　the　growth　temperature　of　graphene　down　to　similar　to　700　degrees　C　or　below,　which　is　far　less　than　that　of　similar　to　1000　degrees　C　for　graphene　grown　on　Cu　or　Pt.　More　importantly,　such　Gr-NiW　network　has　exhibited　excellent　transmittance　in　a　broad　wavelength　and　remarkable　conductivity,　which,　in　turn,　could　be　tailored　by　the　growth　temperature　and　the　W　content.　A　high　transmittance　(84.2%　at　550　nm)　and　low　sheet　resistance　(125.4　Ohm/square)　were　observed　at　Ni　NFs　with　5　wt%　W.　The　combination　of　excellent　conductivity,　high　transparency　and　mechanical　tunability　makes　it　a　promising　candidate　for　wearable　electronics　and　optoelectronics.　Finally,　an　all-nanofiber-based　pressure　sensor　on　sandwiched　Gr-NiW/P(VDF-TrFE)/Gr-NiW　NFs　was　demonstrated,　with　high　sensitivity　(0.61　mV　kPa(-1))　and　excellent　operation　stability.　This　work　offers　deep　insights　into　the　development　of　transparent　graphene-based　electrodes　via　alloy　engineering.