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To achieve the high-frequency vibration test of earthquake-simulation on the Centrifuge, an earthquake-simulation digital control system was designed. The control system included Industrial Personal Computer (IPC), embedded real-time controller, FPGA chassis, data acquisition module and other hardware. The PC program on IPC computed and output driver data for the servo control system. At the same time, Using the RT control program and FPGA underlying program to realize the collection of vibration acceleration response. The acquisition data transmitted by the DMA FIFO to RT, the data was not lost by this way. The control system computed the vibration system transfer function. Finally, the time domain seismic waveform simulated on the centrifuge vibration table meet the test requirements after a few times of correction and iterative arithmetic. And the vibration control precision also satisfied the technical target of the developed equipment.