Combining reentrant honeycomb (RH) and double arrowhead honeycomb (DAH), the reentrant double arrowhead honeycomb (RDAH) is proposed. The deformation modes and compression behavior of the RDAH are numerically simulated and compared with the RH. The results show that the RDAH has a better specific energy absorption SEA than the RH regardless of low velocity or high velocity impact. Compared with the RH, the SEA of the RDAH increased by 9.4% under an impact velocity of 1 m/s and increased by 24.4% under an impact velocity of 100 m/s. The mechanical properties of the RDAH under different impact velocities and relative densities were further discussed, and empirical formulas were established based on the deformation mode map to predict the dynamic bearing capacity of the RDAH. Finally, the influence of the cell number on the in-plane compression of the RDAH is discussed, and it is found that an RDAH larger than 4 × 4 can produce more stable deformation. The influence of different cell vertical ligament heights h and relative densities on the mechanical properties of the RDAH is researched parametrically. The increase in the unit vertical ligament height h will reduce the SEA and destroy the stable deformation of the RDAH. SEA increases almost linearly with increasing relative density.