To design an automatic subpackaging system of visual review to solve problems such as low degree of automation, high labor cost, low efficiency of subpackaging and high error rate. The automatic sorting mechanism was used to realize high speed dividing and sorting of document, and the correctness of the document' encoding was detected by the visual inspection technology. The double-station mechanical arm and binding mechanism were applied to achieve rapid binding and organization. The sorting speed of the system designed reached 800 pieces per minute, the work beat was up to 80 bundles per minute, greatly improving the working efficiency of the system. It provides a good reference for realizing high speed and high efficiency packaging system for all kinds of document.