In order to further improve the response speed of the piezoelectric stack, an ultrafast time sequence driving method is proposed in this paper. The stress wave propagating in the PZT ceramic is considered in this method and all the piezoelectric layers are driven with different pulse voltages to improve the response speed. This method has been simulated by the COMSOL Multiphysics and verified by the experimental result. Compared with the conventional driving method, the time sequence driving method can improve the response speed to be 1.92 times. Besides, the time sequence driving method can achieve a linear superposition of stress generated by each piezoelectric layer, and larger displacement of the actuator can be achieved, whereas the response time remains unchanged.