Hierarchical structures are widely observed in nature, and they have been considered to have excellent mechanical properties. In this paper, a novel hierarchical honeycomb with graded design is proposed to improve impact resistance. Two parameters are selected to determine the design of hierarchy and gradient respectively. A series of nonlinear finite element models are developed in Abaqus to systematically explore the crashworthiness. In in-plane crushing, the deformation mode of honeycomb is studied, and the specific energy absorption (SEA) is mainly discussed in out-of-plane crushing. Compared with the traditional honeycomb, the energy absorption characteristics can be increased by up to 81.4% in the simulation.