In order to study the dynamic response of axially preloaded concrete filled FRP-steel tubes under impact load, the finite element analysis method was used to simulate component model, and the component deformation diagram after impacting was obtained. The effects of axial force, FRP constraining factor, steel tube yield strength and concrete compressive strength on impact properties of components were investigated. Impact force peak curve and midspan deflection peak curve of the specimens were drawn as a reference to judge the impact properties. Simulation results show that when the axial force of two ends of the specimen are up to 150 kN (the axial pressure ratio is 0.15), the impact peak value of specimens reach to maximum. The impact properties of specimen should be improved by increasing FRP constraining factor. Under the 150 kN axial force, the impact peak value of the specimen increases linearly and the peak value of midspan deflection decreases linearly along with yield strength of the steel tube increases. The change of concrete strength has little effect on the midspan deflection of the specimen.