Metal energy consumption device and bridge

The invention relates to a metal energy dissipation device and a bridge. The metal energy dissipation device comprises a top plate, the top plate is provided with a containing groove, a guide block is movably limited in the containing groove, an upper cantilever is fixed to the guide block, an energy dissipation cross beam is fixed to the upper cantilever, a lower cantilever is fixed to the energy dissipation cross beam, and the upper cantilever and the lower cantilever are distributed at intervals in the transverse bridge direction; and the bottom plate is detachably fixed with the lower cantilever. In the earthquake process, the guide blocks push the upper cantilevers to generate bending moments, the bending moments are transmitted to the energy dissipation cross beams, the bending moments of all sections on the energy dissipation cross beams are equal, total-section yield energy dissipation can be achieved, the anti-seismic capacity of the bridge in the transverse bridge direction is guaranteed, and longit