Provided is a highly durable multi-layer piezoelectric element wherein a conductive connection member is not broken even in the case of continuous driving for a long period in a high electric field under high pressure.A multi-layer piezoelectric element includes a stacked body configured so that piezoelectric layers and internal electrode layers are alternately laminated, an external electrode bonded to a side surface of the stacked body and electrically connected to the internal electrode layers, and a conductive connection member which is disposed on a surface of the external electrode and of which surface has projections and depressions formed repeatedly at least in a stacked direction of the stacked body.