After introducing the interferometer scheme and calculating and analyzing correlation coefficients of interference hyspectral images,a method of Near-lossless Compression based on part DPCM for interference hyspectral image is proposed.Complex programmable logic device(CPLD)has been chosen as the hardware design platform,and the algorithm has been described with VHDL.The designed algorithm has been successfully fulfilled system simulation with Maxplus Ⅱ software.The simulation result shows that the algorithm is simple and feasible and can be realized with hardware.