Abstract: Aiming at the poor cooperation and difficult resource sharing between application systems of internet of things(IoT)with diverse domain, a dynamic management system is built for integrate different systems by using of Globus Toolkit 5(GT5). The method of encapsulating the modules of IoT application systems as the standard services by Web Service and core component of GT5 is described, and the unified portal to access these services is provided for users. In the system, multi-level index is used to capture information coming from the application systems, and the center of authentication and authorization is introduced to authenticate user identity and authority. Finally the cooperation and resource sharing between application systems of IoT is realized through united scheduler.