Distributed system and distributed method based on multitask system

The invention provides a distributed system based on a multitask system. The distributed system comprises a distribution unit, wherein the distribution unit is used for distributing processing resources for system instances on all system nodes, and distributing unprocessed resources of the system instance on one system node to a designated system instance when the one system node of all system nodes has a fault; the designated system instance is a system instance which has an associating relationship with the one system node of all the system nodes, on the system node. Correspondingly, the invention also provides a distributed method based on the multitask system. According to the technical scheme provided by the invention, all systems can be mutually associated without competing for the resources, so that repeated processing and leaking of the resources can be avoided.