This paper want to shown that current knowledge management approaches do not emphasise enough on knowledge sharing from reengineering project perspective. To achieve success with reengineering project, an organisation must possess and share knowledge about many different facets of this process. While many reengineering projects have resulted in improve performance, we believe that higher levels of performance improvement are possible by coupling IT capabilities with KM strategy. To explain these results it was assumed that the key to implementing with success reengineering project is having a wide knowledge management strategy. Our objective for the paper reported here was to understand the factors that motivate to share knowledge before implementing any knowledge management strategy to sustain the successfully implementation of reengineering projects.