Fiber-reinforced　polymer　(FRP)　bars　have　the　characteristics　of　high　strength,　lightweight,　and　corrosion　resistance,　which　can　be　used　as　a　substitute　for　conventional　steel　bars　in　a　corrosive　environment.　A　threedimensional　(3D)　model　of　the　concrete　column　considering　the　dynamic　increase　factor　of　the　concrete,　steel　bars,　and　FRP　bars　was　developed　using　finite　element　(FE)　method　to　investigate　the　difference　of　the　concrete　columns　with　steel　bars　and　FRP　bars　in　the　impact　behavior.　The　failure　pattern,　impact　force,　displacement,　reinforcement　strain,　internal　force,　and　energy　of　GFRP-RC　and　RC　columns　were　compared.　Then,　the　effects　of　the　axial　force　ratio　of　0-0.6　and　the　impact　velocity　of　1.2-5.6　m/s　on　the　impact　behavior　were　further　discussed　and　an　optimal　axial　force　ratio　was　recommended　in　this　study.　The　results　showed　that　the　impact　force,　internal　force,　and　local　deformation　of　the　GFRP-RC　column　were　slightly　smaller　than　those　of　the　RC　column,　but　the　duration　and　displacement　increased.　The　increase　in　axial　force　ratio　caused　the　concrete　at　the　top　and　bottom　of　GFRP-RC　columns　to　be　crushed,　whereas　the　impact　resistance　of　GFRP-RC　columns　was　best　when　the　axial　force　ratio　was　0.2.　The　more　serious　damage　to　the　concrete　occurred　at　the　local　impact　position　and　both　ends　of　the　column　as　a　response　to　the　increase　in　the　impact　velocity.　The　concrete　exhibited　larger　energy　dissipation　for　GFRP-RC　columns　when　subjected　to　different　axial　force　ratios　and　impact　velocities.