In　order　to　study　the　effect　of　temperature　on　the　recovery　stress　and　mechanical　properties　of　iron-based　shape　memory　alloys　(Fe-SMA),　experiments　on　the　temperature-related　mechanical　properties　of　Fe-SMA　and　their　influence　laws　were　carried　out.　Firstly,　the　effects　of　different　activation　temperatures　on　the　recovery　stress　of　Fe-SMA　rods　were　investigated　by　pre-stretching　and　activation　experiments,　and　an　empirical　ontological　model　of　recovery　stress-temperature　of　Fe-SMA　was　established　on　the　basis　of　experimental　studies.　Secondly,　secondary　heating　experiments　were　carried　out　to　investigate　the　effects　of　different　activation　temperatures,　additional　loads,　and　exposure　temperatures　on　the　recovery　stress　of　Fe-SMA　rods.　Finally,　the　mechanical　properties　of　Fe-SMA　rods　after　high　temperature　were　investigated　by　monotonie　tensile　experiments.　The　results　show　that　the　established　model　of　Fe-SMA　recovery　stress-temperature　can　effectively　simulate　the　relationship　between　recovery　stress　and　temperature　of　Fe-SMA.　During　the　secondary　heating　process,　when　the　activation　temperature　is　lower　than　200　°C　,　Fe-SMA　has　a　high　stress　retention　ratio,　and　the　stress　loss　of　Fe-SMA　rods　increases　with　the　elevated　of　the　additional　load　and　the　exposure　temperature.　After　experiencing　high　temperature,　the　residual　shape　memory　effect　induces　higher　stresses　in　Fe-SMA　rods　compared　to　the　initial　stresses.　The　modulus　of　elasticity　and　ultimate　strength　exhibit　relative　stability,　whereas　the　yield　strength　experiences　a　slight　increase　with　rising　exposure　temperatures.　This　investigation　serves　as　a　reference　for　informing　the　fire-resistant　design　and　utilization　of　Fe-SMA　members　in　academic　discourse.　©　2024　Journal　of　Functional　Materials.　All　rights　reserved.