Adopting　the　low-temperature　hydrogen　evaporated　from　the　liquid　hydrogen　is　capable　of　improving　volumetric　efficiency　for　the　Wankel　rotary　engine　(WRE).　Considering　the　difficulty　in　ignition　and　slow　flame　propagation　of　low-temperature　hydrogen-air　mixtures,　the　passive　pre-chamber　is　used　to　improve　ignition　and　combustion.　A　three-dimensional　computational　fluid　dynamics　model　for　a　turbulent　jet　ignition　(TJI)　WRE　fueled　by　lowtemperature　hydrogen　was　established.　The　effects　of　low　temperature　and　TJI　on　the　in-cylinder　flow　field,　combustion,　emissions　and　leakage　in　the　TJI-WRE　fueled　by　low-temperature　hydrogen　were　studied　under　different　ignition　timings.　The　results　indicated　that　low-temperature　tends　to　suppress　the　flame　propagation,　whereas　TJI　can　accelerate　the　flame　speed　and　promote　flame　propagation　to　the　unburned　zone　in　the　combustion　chamber.　Combining　low-temperature　hydrogen　with　the　passive　pre-chamber　can　achieve　high　engine　thermal　efficiency　and　power　while　significantly　reducing　leakage.　With　the　ignition　timing　set　at　18　degrees　CA　before　the　top　dead　center,　the　indicated　thermal　efficiency　reached　39.49　%　and　the　indicated　mean　effective　pressure　peaked　at　0.77　MPa.　Compared　to　the　original　engine,　fresh　mixture　leakage　through　spark　plug　cavities　and　adjacent　chambers　was　reduced　by　72.13　%　and　78.79　%,　respectively.