Imaging laser radar is a new type imaging radar. Image matching machine is one of the key foundations for the radar used in imaging navigation application. In this paper, the demands of the machine are analyzed at first. Then the machine with the scheme of DSP ＋FPGA is designed and implemented.The scheme has great capability on calculating and extensibility.It has a steady and various communication interfaces. And the software implement of algorithm can be modified easily.The experimental results show that the system works well for the application with high real-time,high reliability,and flexible architecture.