In　the　present　study,　a　new　sacrificial　cladding　with　the　core　of　foam　concrete　filled　aluminum　tube　is　proposed　for　structural　protection　to　resist　the　blast　load.　First　of　all,　the　energy　absorption　capacity　of　a　single　aluminum　tube　filled　with　different　densities　of　foam　concrete　and　the　cladding　with　the　core　of　different　densities　of　foam　concrete　filled　aluminum　tubes　is　experimentally　investigated　by　the　quasi-static　compressive　test.　Then　the　blast　test　was　conducted　on　the　proposed　cladding　to　experimentally　examine　its　protective　performance.　In　addition,　with　the　validated　numerical　model　by　the　blast　test　data,　the　effect　of　the　density　of　foam　concrete　filler,　the　thickness　of　the　aluminum　tube,　and　the　tube　spacing　on　the　protective　performance　of　the　cladding　is　numerically　investigated.　The　quasi-static　compressive　test　results　show　that　the　density　of　the　foam　concrete　filler　and　the　mutual　squeezing　between　the　tubes　have　a　significant　influence　on　the　energy　absorption　capacity　of　the　proposed　cladding.　The　observed　residual　deflection　of　the　rear　panel　in　the　blast　test　demonstrates　that　the　protective　performance　of　the　proposed　cladding　could　be　significantly　improved　with　increasing　density　of　foam　concrete　filler.　The　numerical　results　show　that　increasing　the　density　of　foam　concrete　filler　and　the　thickness　of　aluminum　tube,　reducing　the　tube　spacing　are　beneficial　to　reduce　the　energy　input　to　the　system.　Meanwhile,　the　simultaneously　increased　stiffness　of　the　cladding　would　lead　to　a　significant　increase　in　the　peak　load　transferred　to　the　protected　structure.