全球化經濟體系的興起，促使產業結構大幅改變，商業行為益趨複雜，顧客需求日漸多元化、個人化，產品服務種類及結構更加繁瑣，因改變隨之而來的成本劇增，如何快速接近並滿足顧客的需求，已成為在激烈競爭環境中的致勝關鍵，而工作流程管理技術正是影響關鍵的重要樞鈕。 現今工作流程管理技術在企業工作流程自動化，監督、協同合作及控制各種活動的執行，以及有效利用資源、縮短流程之研究領域方面已相當成熟，但仍存在工作流程執行的彈性匱乏，與企業資源無法共享的問題。 因此，本研究提出一個簡單有效的動態處理工作流程架構，透過語意網標準語言－資源描述結構(RDF(S)及DAML+OIL制定更嚴謹、豐富、彈性的工作流程定義，使工作流程處理具有邏輯推理的知識能力，另一方面提供一套流程改變機制，以自動調適在執行期間動態改變的流程。 / By the development of global economics influences business model more and more complex. The way of promoting productivity and decreasing cost is the issue of the company. Current workflow management approaches can reach automatic, monitoring, collaboration and controlling the process. But process description and sharing resource approaches consider simplistic method invocation. So how to create dynamic workflow enrich process definition and modify the program at run time is very important issue. In this thesis we propose richer process representations using the semantic web languages which enable us to capture process than current approaches and applying a change system to adapt process change in run time. Further, we develop algorithms by which potential problem in dynamic workflow can be more flexible and combine computer and human activities. Keyword: Semantic Web, Ontology, Dynamic Workflow