Abstract:OSGi is a service-oriented framework based on components, it is very useful to configurate dynamic reorganizable real-time system that the service components can remotely be installed, uninstalled and updated at run-time. But it is challenging the relation attributes are unknown until the services reach. On the basis of execution time service and admission control, this article proposed a dynamic hierarchical scheduling strategy (DHSS) which computs and assigns dynamically the rights of components and constituts a scheduling list. DHSS limited the running time of components by time slice circular scheduling and met the requirement of some especial real-time application by super-component which won’t be interrupted. Finally experimental results and practical application analysis proves the feasibility of the DHSS on the SOA.