The aim of this work was to study the mechanical behavior of the projectile penetration into aluminum honeycomb. The aluminum honeycomb target was impacted in the experiment by nylon projectile which was accelerated by light gas gun. The shell finite element model of the projectile penetration into aluminum honeycomb was established by Ansys/LS-DYNA. The acceleration curves of the projectile were given experimentally when the impact velocities were 140 and 167 m/s, respectively. The penetration of aluminum honeycomb was simulated using the shell element model, obtaining the acceleration curves of the projectile and the deformation graphs of aluminum honeycomb during the penetration. The simulation results coincided well with the experimental results, which proved that the shell element model was reliable to simulate the penetration of honeycomb aluminum.