Interpenetrating　composites　have　a　wide　range　of　applications　such　as　robotics　and　aerospace,　due　to　their　excellent　load-bearing　capacity　and　large　elastic　recovery.　In　this　work,　a　novel　metal/plastic　composite　namely　orthogonal　spiral　metal　skeleton-polyurethane　composite　(OSMS-PU)　is　proposed.　The　mechanical　properties　and　deformation　characteristics　of　OSMS-PU　under　quasi-static　compression　were　investigated　by　means　of　experimental　and　numerical　methods.　The　effects　of　key　geometrical　structure　parameters　such　as　the　diameter　and　the　pitch　of　spiral　wire　on　the　compression　properties　and　Poisson’s　ratio　were　performed.　The　results　show　that　at　60　%　strain　field,　the　compressive　strength　of　OSMS-PU　increases　by　54　%　compared　to　that　of　polyurethane,　while　the　strain　recovery　capability　can　be　up　to　94　%.　This　means　that　the　proposed　OSMS-PU　exhibits　a　good　performance　balance　between　load-bearing　capacity　and　large　elastic　recovery　characteristics.　The　orthogonal　spiral　metal　skeleton　by　altering　the　structural　parameters　of　the　lateral　spiral　wire　suppresses　the　swelling　phenomenon　of　the　interpenetrating　composite,　in　which　the　Poisson’s　ratio　is　in　the　range　from　0.45　to　0.65.　©　2025　Institute　of　Physics　Publishing.　All　rights　reserved.