The invention discloses a fire fighting hammer. The fire fighting hammer comprises a hammer body; the bottom of the hammer body is connected with a handle; a connection plate is arranged at the tail end of the hammer body; rotating plates are connected with the periphery of the connection plate; adjacent rotating plates are connected mutually through canvas. Before the fire fighting hammer is adopted to knock glass, the rotating plates are overturned, and the canvas is unfolded and umbrella-shaped; glass scraps can be shielded by the canvas, and cannot splash on human body; besides, when out of use, the canvas is folded; the occupied space cannot be large.