To meet the requirements of micro airborne electro-optical tracking system for MUAV,a real-time image tracking processing system is introduced.The system is constructed by the high performance DSP chipset TMS320 DM642 as the core digital processor,integrated with the reprogrammable logic chipset CPLD and FPGA as the image preprocessing chipset.Particle filter is implemented as object tracking algorithm.Kalman filter is applied to increasing the speed of computation and solving the delay of image tracking system.Finally,the experiment is given to demonstrate that the algorithm work well in real-time and robust.