A rapid and nondestructive detection device for pork freshness with associated composite quality parameters based on multispectral imaging technology was designed. The system included hardware system and software system. Hardware system consisted of a single-chip microcomputer control unit, light source unit, image acquisition system, data processing unit and LCM display unit. Software system was designed in the ICCAVR development environment programmed by C language. The software was built to control image acquisition module, filter switching module, LCM display module and communication module with a PC. After debugging and experiment of the software and hardware systems, this device could meet the speed requirement of detecting a sample in less than 10s, having the function of nondestructive and rapid detection.