Abstract: The dynamic impact test of anti-whip device was completed by vehicle impact test in a nuclear power plant. The time-history curve of acceleration, velocity and displacement were obtained in particular impact energy. Also with the maximum impact force and deformation, the simulation analysis of dynamic impact test was taken with the LS-DYNA software, and the simulation results were in good agreement with the experimental results. Dynamic impact test and simulation analysis verified the safety of the anti-whip device in particular impact energy.