To improve the tracking performance of the O-E high speed tracking system, it is necessary to put forward the requirement of mechanical properties of the controlled plant according to system’s control accuracy index, which can be used to do mechanical working to make sure that the design can be realized. Specifically, that is to say the structure of the motor and reflection mirror’s transfer function is known, but the parameters keep unknown. Aiming at the request of horizontal high speed and accuracy measurement of the O-E high speed tracking system, first, the system’s mathematic model has been established. Second, some strategies such as trigger guiding, two closed loop control as well as compound control have been presented and applied into the system. With bisection method, the parameters of the motor and reflect mirror have been adjusted. Third, the requirement of the mechanic structure parameter as well as the load resonance frequency have been confirmed to make sure the system can meet the tracking accuracy. Experimental results indicate that the maximum tracking error can be limited to less than 0.086° and the regulator time can be 0.04 s which manifests that the design can satisfy the system requirements of swiftness and high accuracy, and the design also ensures the realization of the control.