System and method for managing work load in the multi system

A multiple system workload management system and a method thereof for dynamically assigning virtual resources to each service according to requirement are provided to perform an integration management for utilizing the resource of distributed heterogeneous systems with various forms. A plurality of physical nodes allocates virtual resource corresponding to the request of user terminals connected on internet. A plurality of physical nods provides a service to the user terminal. A service controller controls the physical node in order to provide the service requested by the user terminal by performing reconfiguration in consideration of state and resource of the physical nodes. A virtual node pool(21) includes a plurality of virtual nodes in which service is mounted.