Image acquisition and processing are essential tec hn ologies in laser imaging radar system. Designing procedure and composition of th e image acquisition and processing based on Master/Slave (M/S) computer system a re presented. Interrupt functions of M/S computer system are utilized to perform frame-real-time acquisition, processing and displaying of laser image. A spec ial DMA controller is designed to co-occupied two identical dual-port SRAMs wi th slave computer ADSP21020, and successive image buffering, acquisition and pro cessing are implemented by exchanging enable rights of SRAMs synchronously. Fina lly, the experiment result analysis is given.