A vibration hammer is provided, including a main body; a striking unit having a piston housing installed to be elevated by a hydraulic pressure controlling valve unit installed in the main body, a hammer guide slidably installed on the main body to be coaxial with the piston housing, and a piston having both ends fixed to the piston housing and a hammer guide and elastically deformable at a predetermined angle with an elevating direction of the piston housing; and a rotating unit installed in the main body and reciprocally rotating the hammer guide elevated together with the piston. The vibration hammer can prevent the piston from being damaged by being elastically deformed when a lateral pressure applied to the rod connected to the piston.