Impact　is　one　of　the　main　accidental　actions　that　should　be　considered;　high-strength　concrete-filled　steel　tubular　(HSCFST)　members　are　mainly　served　as　the　main　piers　of　high-rise　buildings,　large-span　bridges,　and　defense　structures.　Hence,　this　study　systematically　investigated　dynamic　responses　and　residual　capacity　of　HSCFST　members　subjected　to　axial　impact.　A　total　of　six　square　HSCFST　columns　were　tested,　including　testing　groups　with　high-strength　steel　Q690　and　a　control　group　using　normal-strength　steel　Q355.　Results　showed　that　as　the　impact　energy　increased,　the　local　buckling　of　the　steel　tube　became　more　severe,　and　the　impact　force,　time　duration,　maximum　axial　displacement,　and　residual　deformation　were　also　enlarged;　the　residual　capacity　and　residual　rate　were　reduced.　High-strength　steel　significantly　improves　the　axial　impact　resistance　and　residual　capacity.　However,　the　increment　of　residual　capacity　by　using　high-strength　steel　was　relatively　small　owing　to　the　severe　local　buckling　of　steel　tubes.　Furthermore,　the　application　range　of　developed　equations　for　predicting　maximum　displacement　of　CFST　members　subjected　to　axial　impact　has　been　extended　to　high-strength　steels　(i.　e.,　up　to　Q690),　and　together　with　the　axial　displacement　limits　(i.e.,　1/100　L),　these　equations　can　be　employed　as　a　simplified　method　for　anti-impact　design.