In the hydraulic system, the pump source has natural pulsation frequency and backwash pulsation frequency objectively. Fluid pulsation can cause the hydraulic system vibration, which affects the working life of the system. The natural pulsation frequency and the backwash pulsation frequency can change with the change of the pump rotation speed. The Htype twostage hydraulic silencer was taken as the research object, a twostage followup hydraulic silencer was designed by which the structure parameters were changed according to the pump rotation speed and the above two pulsation frequencies could be attenuated in real time.The results show that the twostage followup hydraulic silencer can attenuate the two pulsation frequencies at the same time,and the motion trajectory is in line with the linear relationship. It has the characteristic of easy control.