Abstract: The conventional Hopkinson pressure bar test device was improved according to the results of missile length adjustment and shaper adjustment combined with waveform shaping technology. The dynamic compressive mechanical properties of closed cell foam aluminum with different densities (0.48,0.61,0.70 g·cm^-3) under quasi-static (0.001 s^-1) and medium high strain rates (150 s^-1) were studied. The results show that increasing the missile length could achieve greater deformation and decrease the strain rate at the same time, so 3 m long bullet and 4 m long incident rod and transmission rod were selected. The waveform duration and rising edge time of the sample after using a 6 layer corrugated board shaper with a diameter of 20 mm were longer compared with those without shaper, and the stress uniformity was basically achieved after 208 μs. With the increase of strain rate or density, the compressive stress, yield strength and platform stress of closed cell foam aluminum increased. The ratio of dynamic yield strength to static yield strength was an approximate power function with the relative strain rate, showing a certain strain rate effect.