In　this　study,　the　laminar　premixed　CH4/H-2/air　combustion　was　investigated　by　the　global　reaction　pathway　(GP)　analysis　and　sensitivity　analysis　of　physical　parameters　for　individual　species　under　various　hydrogen　fractions　(alpha)　and　pressures　to　further　understand　the　blended　fuel　combustion　and　explore　two　questions:　(1)　whether　extra　GPs　exist　in　the　blended　fuel　combustion　beyond　the　pure　fuel　reacting　system;　(2)　whether　there　are　insignificant　species　in　pure　CH4　and　H-2　combustion　showing　large　influence　in　binary　fuel　combustion.　Results　show　that　different　GPs　dominate　fuel　oxidation　under　different　alpha.　The　increasing　radicals　are　responsible　for　the　linearly　increasing　laminar　burning　velocity　(LBV)　at　small　alpha,　and　the　transition　from　CH4　chemistry　to　H-2　chemistry　is　responsible　for　the　nonlinearly　increasing　LBV　at　large　alpha.　Extra　GPs　are　shown　and　play　a　role　in　the　binary　fuel　combustion,　but　they　are　still　within　the　CH4　chemistry.　For　most　species,　the　sensitivity　of　transport　and　thermal　parameters　to　laminar　burning　velocity　were　found　has　a　positive　relationship　with　their　maximum　mole　fraction　at　different　alpha.　No　species　were　found　only　important　to　the　binary　fuel,　however,　some　species　such　as　H2O　show　higher　sensitivity　for　binary　fuel　combustion　than　that　of　pure　fuel　combustion.　The　changes　of　GPs　with　increasing　pressure　verifies　that　CH4　chemistry　is　dominant　for　small　alpha　(20%)　combustion　while　H-2　chemistry　dominant　is　for　large　alpha　(80%)　combustion.　Most　physical　parameter　sensitivity　will　increase　with　increasing　combustion　pressure,　which　should　be　paid　more　attention　in　high-pressure　combustion.