The structure resonance perhaps causes the unstable system, which limits the tracking precision and the dynamic response speed of an airborne opto-electronic platform servo system. According to the zero-pole assignment principle, an active disturbance rejection controller is designed with a nominal control input. The active disturbance rejection controller is used to compensate the stable loop structure resonance of the opto-electronic platform servo system. Simulation experiment results demonstrate that the controller could inhibit the structure resonance influence on the servo system and increase the stable loop velocity tracking precision of the opto-electronic platform. Moreover, it is robust to the parameters’ changes of the structure resonance model.