With the rapid development of the service computing and business process, the enterprise needs to perform the integration, modeling and testing of workflow. Meanwhile, it also needs strengthening the resource planning. Enterprise takes the Enterprise Resource Planning(ERP) as a typical informative integration solution in order to improve its management and comprehensive competitiveness. According to ERP’s features, the characteristics of all kinds of workflow modeling approaches are analyzed, and the disadvantages of existing workflow are summarized; then a working model of workflow for event-driven process chain is designed. With the event driver, timely response of process chain and feedback system, the workflow management system can be improved so that it can satisfy the business process in ERP system. It has been found that using event-driven process chain workflow system can improve the extensibility，the flexibility and the capacity of dealing with the complex business process significantly.