To　improve　the　mechanical　and　energy　absorption　properties　of　thin-walled　metal　tubular　structures,　a　type　of　negative　Poisson＇s　ratio　structure　of　rotating　thin-walled　multi-cell　square　tubes　with　foam　concrete　filler　(RSTFC)　was　proposed.　Firstly,　quasi-static　compressive　test　on　the　thin-walled　multi-cell　square　tubes　(TMST),　rotating　thin-walled　multi-cell　square　tubes　(RTMST),　and　RSTFC　specimens　were　carried　out,　and　their　deformation　mode,　load-displacement　curve,　and　energy　absorption　performance　were　experimentally　investigated.　The　test　results　show　that　the　TMST,　RTMST,　and　RSTFC　specimens　all　exhibit　compressive　failure.　Furthermore,　it　is　found　that　the　rotational　deformation　of　the　RTMST　specimen　can　effectively　reduce　its　peak　load　and　improve　the　energy　absorption　by　73.2%　and　33.6%　in　comparison　to　the　TMST　specimen.　Moreover,　due　to　the　presence　of　foam　concrete,　the　aluminum　tubes　undergo　a　certain　degree　of　deformation　during　the　rotational　process,　accompanied　by　continuous　compression　deformation　of　the　foam　concrete.　As　a　result,　the　crushing　force　efficiency　and　energy　absorption　of　the　RSTFC　specimen　filled　with　200　kg/m3　foam　concrete　increase　by　22.5%　and　8.9%　respectively　compared　to　those　of　the　RTMST　specimen.　Based　on　the　validated　numerical　model　by　test　data,　it　is　observed　that　the　matching　of　bearing　capacity　between　aluminum　tube　and　foam　concrete　significantly　influence　the　mechanical　properties　and　energy　absorption　of　the　RSTFC　specimen.　Therefore,　the　deformation　mode,　load　transfer,　and　energy　absorption　performance　of　the　RSTFC　specimen　could　be　regulated　by　adjusting　the　density　of　foam　concrete,　the　wall　thickness　of　the　aluminum　tube,　and　the　filling　mode　of　foam　concrete.　It　was　recommended　to　apply　RSTFC　with　two　periodic　structures　in　practical　engineering　due　to　their　relatively　higher　specific　energy　absorption　and　crushing　force　efficiency.　©　2024　Beijing　University　of　Aeronautics　and　Astronautics　(BUAA).　All　rights　reserved.