Aiming at the vibration sources with different frequencies on the truss in the aerospace field, a damping actuator with three modules in series, namely, the passive hydraulic damping module, the active voice coil motor module and the position measurement module, is designed, which realizes the anti vibration of the active passive hybrid structure in a wide frequency band. The structure of active and passive vibration isolation integrated hydraulic electric hybrid actuator is designed, and the electromagnetic simulation is carried out with Comsol finite element analysis software. Under the condition of ensuring the same overall dimension and the uniformity of output force, the internal structure of the actuator is improved, and the maximum output is optimized. Then the static force is tested on the platform and the experiment is completed. The experiment shows that the damping device can produce more than 100N uniform output force in a small structure.