To improve the bandwidth of digital video transmission of an optic-electronic tracker, enhance the anti-jamming performance of the system and ease the workload of a slip-ring, a fiber transmission system for high-speed digital video image signals was designed.By making use of the anti-jamming and high bandwidth characteristics of the fiber data transmission technology, the image transmission quality was improved and the transmission capacity was enlarged.At the sending end, the parallel digital video signals were serialized and the serial data were transferred into optical signals by a fiber module.At the receiving end, the optical signals were transferred back into the electronic signals by another fiber module, and the serial data were de-serialized back to the parallel data format.The frame signals, line signals and data signals were transmitted together and the processed clock signals were transmitted separately as system clock signals.Experiment results indicate that the image signals can be correctly transmitted by the fiber transmission system, and the bandwidth and the clock frequency have been up to 1.25 Gbit and 62.5 MHz,respectively.Furthermore, the data transmission latency of the system is less than 236 ns, and the clock edge can be located at the valid data position.