To deeply promote the digital enterprise construction, it’s necessary to provide an assembly process data organization model which meet all the requirements of product design and production management. Assembly process data requirement was analyzed on the basis of reference the foreign and internal research achievement. Then an idea of multi-level assembly process flow was proposed by analyzing the procedure of product design and production. At the same time, Multi-level BOP based assembly process data model which fit all the requirement of assembly procedure was constructed through the analyzing of material flow and assembly resource relationship among each unit of assembly flow. In addition, data endorsement and application of this model in the work of product design, production plan and production prepare was expounded. Accordingly, the bridge and bond function resulted by this model between product design and production was certified.