In order to meet the urgent requirements of manufacturing, testing and development in the domestic automobile shock absorber industry, a new kind of shock absorber test bench was established to test the response performance of shock absorbers in complex load spectrums, and to study the servo control strategy. Three state control strategies were used to improve the system response and tracking accuracy. Meanwhile, system models were built and simulated based on Matlab/Simulink software. Comparison between the simulation and experimental results proved that these three state control strategies can guarantee the stability of the system, improve the system bandwidth, and ensure the accurate measurement of the shock absorber damping force and acceleration attenuation on the test bench.