In　order　to　provide　a　kind　of　high　performance　filling　material　for　the　lightweight　aggregate　concrete　filled　steel　tube,　18　experimental　groups　were　designed　for　the　material　experiment.　The　raw　material　included　the　high　strength　cement,　the　fly　ash,　the　silica　fume,　the　expansive　agent,　the　shale　haydite　and　the　mixed　fine　aggregate　composed　of　the　shale　pottery　and　the　natural　sand.The　high　strength,　lightweight,　slight　expansion　and　self-compacting　concrete　was　prepared.The　influence　law　of　the　volume　fraction　of　the　shale　pottery　in　the　mixed　fine　aggregate,　the　amount　of　cementitious　materials　and　the　volume　rate　of　sand　of　concrete＇s　working　performance,　physical　mechanical　properties　and　hardening　deformation　was　comparatively　analyzed.　The　results　show　that　the　filling　lightweight　aggregate　concrete　of　high　performance　can　be　prepared　for　the　lightweight　aggregate　concrete　filled　steel　tube　by　using　of　the　aforesaid　raw　material.　The　amount　of　the　admixture　and　the　mixed　fine　aggregate　can　be　designed　by　using　of　the　substitute　incorporation　and　the　loose　packing　theory.　The　grain　composition　can　be　modified　by　adjusting　the　volume　ratio　between　the　natural　sand　and　pottery　in　the　mixed　fine　aggregate.　The　proper　cementitious　materials＇　amount　is　540-570　kg　per　cubic　metre　in　the　concrete.　The　suitable　value　of　volume　rate　of　the　sand　is　about　47%.　©　2017,　Editorial　Department　of　Journal　of　Beijing　University　of　Technology.　All　right　reserved.