The integration of information systems and business process will affect competitive advantages of firms. In order to develop information system, modeling of business process is a fundamental work of system analysis and design. System dynamics is useful to solve non-linear, complex, time delay and feedback problems of business processes. However it still belongs to a special field of modeling language because it canít be integrated well with information systems in organizations. The purpose of this paper is to integrate system dynamics with UML and thus they can be developed synchronously during information systems implementation in enterprise. For this reason, integrated development process and system architecture with system dynamics and UML have also been proposed in this paper.