The basic idea of applying parallel robot sorting machines in express delivery industry is illustrated, and the technical features as well as advantages of parallel industrial robots and serial industrial robots are analyzed. It was proved that combining and applying sorting technology and visual technology of parallel robots in express delivery industry could not only facilitate robots to make corresponding adjustments to changes of external environment, but also improve flexibility and adaptability of robots. Meanwhile, compared with manual sorting, the error rate is greatly lowered, the floor occupation rate is also reduced and the sorting efficiency is raised.