Abstract: The management of product data and reference information applied in various phases of satellite AIT is improved through designing a series of tables, block boxes and other structural diagrams to build a new reference documents system for AIT process. The process reference information will be provided efficiently in each manufacture stage by a multi-layer listing method. Plans of productions and materials supply will be mapped out based on this method coordinately. And through the manufacturing execution system(MES) and LAN, the satellites AIT manufacture mode will be updated.