Abstract: In order to determine the crushing load in the Riera formula, based on the material testing machine and the Hopkinson pressure bar experimental system, the static and dynamic crushing behaviors of aluminum alloy under axial quasi-static and different velocity impact loading were studied. The load-time curves of various sizes and shapes of aluminum alloy in static and dynamic crushing process, as well as the variation of peak crushing load and average crushing load with impact velocity were obtained. The results show that the average crushing force is a good choice for the crushing load in the Riera formula, and the difference between the dynamic and static crushing forces of the aluminum alloy comes from the lateral inertial effect of the structure. Based on the dimensional analysis and further analysis of experimental data, the unified average crushing force empirical formula for the aluminum alloy suitable for quasi-static and impact loading was obtained.