The static bill of material data and dynamic bill of process data need to be integrated during manufacturing process of complex product, in order to wholly control the workpiece of workshop and systematically consider material requirements planning and enterprise resource planning. This paper constructed an integrated BOM model based on production plan, which is described by a sequence, and generic production structure is introduced to represent diverse needs. Finally, the paper analyzes the general machining case of "suspension beam" parts assembly production in a complex products manufacturing enterprise, validating the practicality and effectiveness of integrated BOM model.