Engineering　structures　in　the　city　environment　surrounded　with　combustible　materials　are　prone　to　be　in　the　danger　of　combined　effects　of　blast-induced　impact　loading　and　fire.　Four　steel-fiber　reinforced　concrete　(SFRC)　beams　were　tested　after　pre-impact　loading　(impact　velocity　=　5.4　m/s)　to　explore　their　fire-resistance.　The　beams　were　first　subjected　to　impact　loadings　and　then　exposed　to　fire　with　a　constant　load.　The　failure　patterns　of　beams　were　observed,　and　the　time　histories　of　mid-span　deflections,　temperature　field　as　well　as　rebar　strains　were　recorded.　Moreover,　the　fire　resistance　of　these　beams　were　discussed.　A　three-dimensional　finite　element　numerical　model　considering　the　effects　of　strain　rate　and　high　temperature　were　established.　In　the　simulations,　a　two-step　analysis　method　was　utilized.　In　the　first-step,　the　impact　loading　process　was　simulated.　While,　in　the　second-step,　and　the　failure　behavior　of　the　SFRC　beams　subjected　to　both　fire　and　constant　mechanical　loading　was　modeled　with　a　sequentially　coupled　thermal-stress　analysis　method,　in　which　the　simulation　results　obtained　in　the　first-step　were　taken　as　the　initial　state.　Good　agreement　between　the　simulation　results　and　the　test　results　illustrates　the　validation　of　the　simulation　method.　It　is　found　that　the　failure　patterns　of　SFRC　under　the　low-velocity　impact　load　is　altered　from　shear　type　to　bending　type　with　the　increase　of　steel　fiber　dosage.　When　the　impact　energy　is　relative　lower,　though　weakened　by　the　pre-impact,　the　beam　still　work　in　an　elastic　stage　and　shows　good　fire　resistance.　Moreover,　limited　to　the　low-energy　impact　conditions,　the　influence　of　steel　fiber　content　on　the　thermal　and　mechanical　behaviors　of　damaged　beam　can　be　ignored.