The invention discloses a method and system for realizing cluster service priority levels. Service priority levels are set by distinguishing cluster services from non-cluster services, and the services of user equipment (UE) are processed according to the service priority levels. The method and the system realize the technology of cluster service priority levels, and are capable of comparing the service priority level of an activated service with the service priority level of a new service and processing the services according to a comparison result when the new service and the activated service are not concurrent, so that the flexible and convenient service priority level configuration is provided, conflicts among different services are effectively reduced, rapid switching among different services is realized, and multi-service requests of users are satisfied.