A parameter identification method for an elastic-sliding distribution parameter model of a piezoelectric ceramic actuator is provided, which can describe the hysteresis nonlinearity of the piezoelectric ceramic actuator and the accuracy which is no longer dependent on the number of cells, and belongs to the technical filed of hysteresis nonlinear fitting of piezoelectric ceramic actuators. The method comprises: using an elastic-sliding distribution parameter model and the hysteresis nonlinearity of the piezoelectric ceramic to solve a derivative curve of an initial ascending curve, a main ascending curve or a main descending curve; according to the solved derivative curve, selecting and fitting an expression of an external stiffness function to obtain parameters; and further using a complete hysteresis loop to simulate and optimize the model parameters to obtain a final distribution parameter hysteresis nonlinear model. Through the experimental verification, the elastic-sliding distribution parameter model can be identified and obtained quickly and accurately by using the method, and the error of the hysteresis nonlinear fitting of the model identified by using the method is less than 0.60%.