To satisfy the enterprise process modeling requirements in the ability of powerful expression and analysis,a new extended workflow net(EWF_net) was proposed for formalizing workflow patterns.

• 为了满足企业用户对工作流模型在描述能力和分析能力上的要求；提出了一种支持工作流模式的扩展工作流网(EWF_net；Extended WorkFlow net).