<p>SiC hollow sphere/aluminum matrix syntactic foams are taken as the research object in this paper, and drop weight impact compression experiments were conducted on three kinds of syntactic foams with varying hollow sphere sizes. A hollow sphere random placement algorithm was proposed based on python, and a numerical model of hollow sphere/aluminum matrix syntactic foam is established. The effects of hollow sphere size, volume fraction, aspect ratio and impact velocity on the low-velocity impact compression properties of the syntactic foam were investigated using the finite element method. The consistency of the model with the experimental results verifies the validity of the model. The results show that the compressive strength and plateau stress of the 3.55&#xa0;mm SiC hollow sphere-reinforced syntactic foam model were 95.6&#xa0;and 60.4&#xa0;MPa, respectively. The smaller hollow sphere size and aspect ratio could ensure higher compressive strength and plateau strength of the syntactic foam. At the yield plateau stage, higher volume fractions of syntactic foam exhibited a larger strain interval, and the compressive stability gradually decreased with an increasing aspect ratio. The energy absorption capacity of syntactic foam can be improved by increasing the spheres volume fraction or reducing its diameter. The damage analysis shows that the shear effect is the main reason for the plastic collapse of SiC hollow sphere syntactic foam.</p>