As　a　promising　power　system,　hydrogen-fueled　Wankel　rotary　engine　with　excellent　power　and　emission　characteristic　have　received　attention　increasingly,　which　makes　it　of　great　interest　to　investigate　it.　To　make　up　for　blanks,　this　work　was　conducted　to　experimentally　investigate　the　effect　of　spark　plug　position　on　the　combustion　and　emission　characteristic　of　hydrogen-fueled　Wankel　rotary　engine　under　1500　r/min,　66　kPa　manifold　absolute　pressure　and　1.5　excess　air　ratio.　The　results　indicate　that　compared　to　the　trailing　spark　plug,　the　leading　spark　plug　is　more　suitable　to　hydrogen-fueled　Wankel　rotary　engines,　which　can　realize　a　wider　ignition　range,　higher　maximum　brake　torque,　lower　cyclic　variation　and　better　nitric　oxide　emission.　The　maximum　brake　torque　of　adopting　trailing　spark　plug　is　31.2　N.m,　which　is　only　87%　of　the　maximum　brake　torque　of　36.0　N.m　with　adopting　leading　spark　plug.　At　the　maximum　brake　torque　ignition　timing,　adopting　leading　trailing　spark　plug　achieves　lower　cyclic　variation　and　slightly　higher　thermal　load　than　adopting　trailing　spark　plug.　Besides,　the　optimum　central　heat-release　point　of　both　spark　plug　positions　locate　between　35　and　40　degrees　CA　after　the　top　dead　center,　and　that　of　leading　spark　plug　is　later　2　degrees　CA　than　that　of　trailing　spark　plug.　Moreover,　both　spark　plug　positions　obtained　0　nitric　oxide　emission　at　maximum　brake　torque　ignition　timing,　which　means　that　emission　will　not　be　a　problem　to　limit　the　selection　of　spark　plug　position　under　tested　conditions.