The　mechanical　behaviors　of　structure　concrete　can　degrade　significantly　at　high　temperatures　from　fire.　The　mechanical　performance　of　structure　concrete　may　recover　to　some　extent　during　the　subsequent　cooling　process　after　fire.　A　comparative　study　on　the　dynamic　performance　of　concrete　between　at　high　temperature　and　after　cooling　down　is　necessary　to　predict　dynamic　response　of　structures　subjected　to　fire　or　blast　loads　more　precisely.　In　this　paper,　the　dynamic　characteristics　of　Steel　Fiber　Reinforced　Concrete　(SFRC)　after　high　temperature　cooling　were　examined　with　the　use　of　Split　Hopkinson　Pressure　Bar　(SHPB)　and　compared　with　the　test　results　at　high　temperature.　The　dynamic　compressive　strength,　dynamic　increase　factor　(DIF)　of　stress　and　peak　strain　of　SFRC　with　different　fiber　volume　(0%,1%,2%)　after　natural　cooling　from　different　target　temperatures　(200　degrees　C,　400　degrees　C,　600　degrees　C)　to　ambient　temperature　were　obtained　and　compared.　Experimental　results　show　that　the　dynamic　compressive　strength　and　peak　strain　of　the　specimen　first　increases　and　then　decreases　with　the　increase　of　the　strain　rate　cause　the　high　temperature　cooling　process　made　the　specimens　prone　to　local　failure　at　high　strain　rates.　The　mechanical　properties　of　SFRC　such　as　strength　can　be　well　recovered　during　the　natural　cooling　process　after　high　temperature.　The　deformation　capacity　and　energy　dissipation　capacity　of　different　types　of　concrete　after　high　temperature　cooling　are　greatly　improved　compared　with　that　under　high　temperatures.