Pinch technology plays an important role in chemical process design for years.In pinch technology

composite curves are widely consumed

giving more convenience in analyzing how utilities are used and required. In order to give a more efficient process design

sometimes we need to know the detailed information in the composite curve. This paper proposes a method that uses the composite stream matrix to describe the detailed information about origin streams in composite curves.One case study is demonstrated to show the usage of the proposed method.