In order to improve the control and performance ability of GPS display control system, in the electrooptical tracking device. Based on the previous equipment, increase the touch screen display terminal and new circuit structure. The operation interface is simple, beautiful, providing a good interface for the operator. Based on the structure of FPGA+DSP, The system control precision, convenient, and its realtime processing ability is strong. In the engineering application, the system is stable, easy to operate, and communication with other systems works well, which achieving a good GPS navigation, positioning and other functions