To　investigate　the　effect　of　constructional　measures　(including　horizontal　and　vertical　stiffeners,　rebar　cages,　embedded　steel　tubes,　and　cavity　welded　steel　plates)　under　high　axial　load　ratios　on　the　seismic　performance　of　concrete-filled　steel　tubular　(CFST)　columns,　quasi-static　tests　for　six　large-scale　CFST　columns　with　various　constructional　measures　are　performed.　All　specimens　are　subjected　to　identical　axial　forces.　The　failure　mode,　hysteresis　characteristics,　bearing　capacity,　stiffness　degradation,　ductility,　and　energy　dissipation　of　specimens　are　analyzed.　The　study　shows　that　the　horizontal　stiffener　delays　the　occurrence　and　severity　of　column　base　buckling,　the　vertical　stiffener　improves　the　bending　resistance　capacity　and　initial　stiffness　of　the　member,　the　rebar　cage　improves　the　ductility,　and　the　embedded　circular　steel　tube　significantly　improves　the　member＇s　bearing　capacity,　ductility,　and　energy　dissipation.　When　an　internal　circular　steel　tube　and　cavity　welded　steel　plate　are　applied　in　tandem,　the　section　steel　ratio　increases　by　4.42%　and　the　bearing　capacity　improves　by　42.72%.　A　finite　element　model　is　created　to　verify　test　results,　and　simulation　results　match　the　test　results　well.