The invention relates to a biomass energy crushing apparatus capable of performing multiple crushing. The biomass energy crushing apparatus comprises a shell, wherein a material inlet hopper is arranged at the top portion of the shell, a pair of crushing rollers are arranged inside the shell below the material inlet hipper, and are supported by crushing roller shafts arranged at the central positions, the crushing roller is uniformly provided with a plurality of crushing teeth, a first sieve mesh is arranged below the crushing rollers, and is arc-shaped, a rotation shaft is arranged below thefirst sieve mesh, the lower end of the rotation shaft is connected to a motor positioned below the shell, an upper grinding disc is fixed on at the top end of the rotation shaft, the upper surface ofthe upper grinding disc is provided with an annular concave groove, a plurality of through holes are arranged at the annular concave groove position at intervals, and a lower grinding disc is arrangedbelow the upper grinding disc. According to the present invention, the material is subjected to multi-stage crushing treatment by arranging the multiple-crushing device, such that the crushing effectis good, and the crushing efficiency is high; and the biomass energy crushing apparatus has the reasonable structure design and has a certain popularization and application value.