The invention discloses a cloud call-center system and a dynamic disaster recovering method and core dispatching device thereof, and relates to the field of mobile communication. The dynamic disaster recovering method comprises the steps that the cloud call-center core dispatching device finds a resource abnormal, deletes the fault resource out of device resources when confirming that the abnormal resource breaks down and applies for a new resource from a resource pool, the resource fault information notification is allocated to a seat for the fault resource, the request, sent by the seat, for acquiring the resource again is responded, the new resource is allocated to the seat, and the seat can deploy service applications on the new resource. Different regions can share one cloud call-center system based on the cloud technology, it is not needed for all the regions to establish a call center, the deploying period is short, the different regions can share the resources of the cloud call-center system, a resource pool for disaster recovering can be established for all the regions, the number of the resources in the pool is reasonably set, and therefore high reliability can be achieved with a few resources.