A workflow system provides enterprises the automatic and paperless process management. The idea of Enterprise JavaBeans (EJB) is to utilize components from various vendors to construct an application, which has the characteristics of scalability, security, distributed, and fast development. In the paper, an EJB module and the enterprise beans are implemented. Workflow designer may use this module to invoke the business methods defined in the enterprise bean on the outer application server. The EJB module may facilitate the component development of a workflow system, and reuse the existing components to fulfill the function needed.