In　order　to　investigate　the　construction　of　column-to-beam　joints　and　to　understand　the　effect　of　recycled　aggregate　concrete　(RAC)　and　cross-section　of　beams　and　columns　on　the　seismic　performance　of　recycled　aggregate　concrete-filled　light　steel　tubular　frame　structure,　four　new　types　of　assembly　joints　were　proposed　in　this　paper.　A　low　cyclic　loading　test　of　six　frame　specimens　was　carried　out.　The　failure　characteristic,　load　bearing　capacity,　hysteresis　property,　ductility,　strength　and　stiffness　degradation,　and　energy　dissipation　were　analyzed.　The　damage　process　of　the　specimen　was　simulated　using　the　ABAQUS　software,　and　the　results　agreed　well　with　those　obtained　from　the　experiments.　The　results　showed　that　the　construction　pathway　of　the　joints　exhibited　significant　influence　on　the　seismic　performance　of　the　frame.　The　proposed　reinforced　joint　(using　angle　steel　and　stiffeners)　significantly　improved　the　bearing　capacity,　stiffness　and　energy　dissipation　capacity　of　the　recycled　aggregate　concrete-filled　steel　tube　frame.　The　seismic　performance　of　the　steel　frame　was　improved,　while　the　energy　dissipation　capacity　increased　by　635.7%　using　RAC　filled　in　the　steel　tubes.　Finally,　by　appropriately　increasing　the　size　of　cross-section　on　the　beams　and　columns　can　improve　the　bearing　capacity,　stiffness　and　ductility　of　the　structure.　©　2018　Czech　Technical　University.　All　rights　reserved.