A lossless compression and decompression method is presented, which is based on RICE code recommended by CCSDS(Consultative Committee for space Data Systems). After bringing the function to software, the algorithm is optimized and the function is achieved successfully in FPGA using the Verilog hardware description language. The compression card and the decompression card which have been manufactured are small cubage, light weight and low power consumption. The system's highest processing speed can achieve 20M bits per second. It is possible to extend the data capability of this system. The system is mainly used for remote sensing image of MODIS. Its average compression ratio is over 1.6.