As　a　novel　lightweight　composite　structure　with　notable　mechanical　resistance　and　thermal　insulation　characteristics　in　high-temperature　environments,　the　sandwich　cylindrical　shell　with　entangled　metallic　wire　mesh　(SCS-EMWM)　has　been　growing　interest　in　industrial　applications.　This　study　focuses　on　investigating　the　thermo-mechanical　behavior　of　the　SCS-EMWM　in　high-temperature　environments.　The　static　mechanical　properties　of　entangled　metal　wire　mesh　(EMWM)　are　first　characterized,　and　the　macroscopic　mechanical　properties　are　identified　using　the　Ogden-Mullins　model.　Subsequently,　the　deformation　modes　at　different　densities　and　temperatures　are　analyzed　through　theoretical　and　finite　element　methods.　The　radial　compression　test　of　SCS-EMWM　is　performed　to　characterize　its　energy　dissipation　(Delta　W),　loss　factor　(eta),　and　secant　stiffness　(K).　The　quasi-static　loading-unloading　results　of　the　EMWM　reveal　a　positive　correlation　between　temperature,　density,　and　the　mechanical　behavior.　In　addition,　as　the　density　and　temperature　increase,　the　peak　load　of　SCS-EMWM　continuously　increases　from　20　to　200　N.　Under　high-temperature　conditions,　the　radial　compression　test　of　SCS-EMWM　reveals　a　significant　concurrence　between　experimental　and　simulation　results　regarding　load　variations.　Furthermore,　in　comparison　to　EMWM,　the　loss　factor　of　SCS-EMWM　exhibits　an　approximate　increase　of　0.1　and　shows　a　positive　correlation　with　temperature,　while　it　decreases　with　increasing　density.　This　study　focuses　on　investigating　the　thermo-mechanical　behavior　of　the　sandwich　cylindrical　shell　with　entangled　metallic　wire　mesh　(SCS-EMWM)　in　high-temperature　environments.　The　numerical　and　experimental　methods　are　applied　to　systematically　analyze　the　high-temperature　state　of　its　energy　dissipation,　loss　factor,　and　secant　stiffness.image　(c)　2023　WILEY-VCH　GmbH