The availability of computer-aided systems-engineering environments has redefined the organization system development. Pace of change accelerates in the twenty-first century as a result of technological opportunities, liberalization of the world markets, demands for innovation and continually decreasing life cycle of software. Organizations have to continuously re-adjust and re-align their operation to meet all these challenges. This pace of changes has increasingly forced organization to be more outward looking, market-oriented and knowledge driven. This paper present integrated framework of how reverse engineering process work goes in Enterprise Information System(EIS).The essential functions in reverse engineering, how they are associated with EIS, what will be the impact on the organization which is using reverse engineering