Abstract: By using UML(Unified Modeling Language) , this parer proposed a relationshipbased modeling method to support modeling and extraction the information contained in the design stage of software development. A prototype system was implemented. The extracted design information can be used in software refactoring, testing, as well as in aspectoriented programming. This approach is able to exploit the design phase semantic information and assist in software refactoring.

Key words: software refactoring, aspectoriented, metadata, design information extraction, software refactoring, aspectoriented, metadata