This　study　investigated　the　high-temperature　mechanical　properties　and　collaborative　working　mechanism　of　zinc-5%　aluminum-mixed　mischmetal　alloy-coated　steel　strand　cables　(M-C　cables)　and　internal　steel　wires　by　numerical　analysis,　based　on　the　experimental　data　for　the　high-temperature　mechanical　properties　of　steel　wire.　The　high-temperature　mechanical　properties　of　zinc-5%　aluminum-mixed　mischmetal　alloy-coated　steel　(M-C　steel)　with　round　and　Z-shape　cross-section　shapes　were　studied　in　the　temperature　range　of　30-800　degrees　C　using　the　constant　temperature　loading　test　method.　The　two-stage　Ramberg-Osgood　model　for　M-C　steel　wires　at　elevated　temperatures　is　proposed　for　modeling　of　the　M-C　steel　wires.　Furthermore,　the　equations　for　the　reduction　in　the　nominal　yield　strength,　elastic　modulus　and　ultimate　strength　for　M-C　steel　wires　at　elevated　temperatures　are　proposed.　Numerical　analysis　and　investigation　of　the　high-temperature　mechanical　properties　of　normal　M-C　cables　and　locked　M-C　cables　under　eight　temperature　conditions　are　carried　out.　Based　on　the　high-temperature　constitutive　relationship　of　the　round　and　Z-shaped　M-C　steel　wires　obtained　experimentally,　the　thermostatic　drawing　process　is　simulated　at　different　temperatures　for　two　types　of　M-C　cables.　The　high-temperature　stress-strain　relationship　between　the　two　and　the　relevant　high-temperature　mechanical　performance　index　were　obtained.　According　to　the　numerical　simulation　results,　the　energy,　contact　stress　distribution　and　radial　displacement　deformation　of　M-C　cables　under　the　different　temperature　condition　were　evaluated　and　analyzed.　The　collaborative　working　mechanism　of　M-C　cabled　affected　by　temperature　was　revealed.