A service preemption method, device, and nodeB. The method comprises: receiving a service request; when it is determined that the type of the user equipment belonging to the service is a carrier aggregation UE, disassembling, according to obtained wireless resources status information, the evolved universal terrestrial radio access network radio access bearer (E-UTRAN RAB, E-RAB) carried by the service request; determining, according to the E-RAB reception result of a primary cell, the primary cell service preemption result, and the result of establishing E-RAB of a secondary cell, whether to access the service, and responding to the service request; determining, according to the preemption service process result, whether to release preempted service.