Abstract: Business process reuse makes use of existing business processes or business knowledge to create a new process model. It's a hot research in workflow technology, business process reuse can reduce the complexity of process definition, improve the quality and efficiency of process definition. This paper presented the basis and method of determing similarity of process, and detailed the principles and steps of the Similarity Determination method of Workflow Process Oriented to Reuse. Using this method can determine whether the processer is similar, and produce a workflow template automatically according to the similar processes. It achieves the reuse of the process definition.

Key words: Ontology, Business reuse, Process similarity, Workflow template