The main components of Dalian beige color sorter include: feed hopper, vibrating feeder, chute slide, light source, background plate, CCD detection lens, discharge bin, air nozzle, air compressor, air purifier and filter. Photoelectric system: the photoelectric system is the core part of the color sorter, mainly composed of light source, background plate, CCD lens and relevant auxiliary devices. The light source provides stable and uniform illumination for the tested material and the background plate. The experimental results show that the blue LED light source is the best as the lighting source.. In addition to the function of providing raw grain to be selected for the color separator, the feeding system can also control the output of the color separator. By adjusting the flow control board of the feed hopper and the vibration amount of the vibrating hopper, the output of the color separator per unit time can be controlled. It is not easy for users to comprehensively investigate the performance and quality of color sorters so as to select color sorters with high performance price ratio. Users must have a certain understanding of color sorters.