Information related reuse is classified into function & environment information and quality information. The former is used for the process of the classification and retrieval process, the latter is used for the process of extraction and evaluation of components. In this thesis, we proposed the procedual and object oriented quality information about measurement of reusability for components that was insufficient in existing reuse systems. Also we selected the function & environment information, procedual and object-oriented quality information, and tested a degree of quality of classes from 3 files implemented by C⁺⁺.