The centrifugal shaker was considered as the most advantage and effective equipment in the seismic
field, a coupling mathematical model of light-flexible base, hydraulic actuator and soil model was established to clarify the coupling characteristic in centrifugal shaker. The light-flexible base was firstly simplified as a continuous mass spring to deduce the nature frequency estimation method of light-flexible base and derive equivalent method of base’s dynamic characteristic. Then, the transfer function of coupling system was presented by integrating four kind fundamental equations according to the prior equivalent model of centrifugal shaker. Finally, we study the servo control strategy of centrifugal shaker. The design requirement on system bandwidth can be satisfied by cooperating the forward filter, three-state-feedback controller and forward-feed controller.