Most researches about business components address the technical problems to draw the business process into structural model. But the basis of the "modeling" work is illustrating the real process precisely, which is not easy because of the difficulty to extract process information from the knowledge embedded in human experiences, especially when knowledge is held in tacit ways. Considering the knowledge management of process illustrating, this paper proposes a formal framework for improving the identification of business components. This framework enables business analysts to better understand the target process thoroughly. Case study is made to show the utility of the framework.