A　novel　gear　with　high　load-carrying　capacity　and　low　sliding　rate　was　designed　based　on　a　curved　path　of　contact．Through　differential　geometry　and　spatial　meshing　theory，the　novel　gear　profiles　were　derived　from　the　preset　parabola　path　of　contact，and　calculations　of　the　contact　ratio　and　the　sliding　rate　of　the　novel　gears　were　carried　out．The　parametric　high-precision　three-dimensional　finite　element　meshing　modeling　of　novel　gears　was　obtained　based　on　the　simulation　gear　machining　programmed　by　Matlab．On　this　basis,　through　the　loaded　tooth　contact　analysis　of　the　novel　gear　pair，and　a　thorough　study　of　the　impact　of　modification　parameter　and　misalignment　on　the　contact　stress　and　the　bending　stress　of　novel　gears　was　carried　out．Results　show　that　compared　with　the　involute　gears，the　contact　ratio　of　the　novel　gears　is　significantly　improved　and　the　transmission　is　more　stable．The　slide　ratio　of　tooth　surface　is　reduced　by　22.9%，the　meshing　efficiency　is　improved，and　the　effective　life　is　prolonged．Under　the　same　load，the　load-carrying　capacity　of　the　novel　gears　with　no　error　and　no　modification　and　with　error　and　modification　is　obviously　better　than　that　of　the　involute　one，and　especially　the　contact　stress　is　reduced　by　more　than　17.0%.　©　2024　Huazhong　University　of　Science　and　Technology.　All　rights　reserved.