This paper discusses the adaptation of the Preisach model to describe the hysteresis behavior of piezoceramic actuator system and presents a modified geometric interpretation and numerical implementation method for the Preisach model especially for the hysteresis modeling of piezoceramic actuator system. The demagnetized-state, which refers both input and output equal zero state, and the generalized demagnetized-state are used as the basis of Preisach model rather the saturation states. Experiments on the hysteresis behavior of a piezoceramic actuator were carried out and the experimental measurements are compared with the hysteresis predictions. The comparison results verify the application of the modified Preisach model to piezoceramic material system.