Method, device, and system for processing notification of network function

Embodiments of the present invention provide a method, a device, and a system for processing notification of a network function. The method comprises: receiving a notification message comprising indication information and sent by a base station controller (BSC), the indication information being used for indicating network function activating states of different PLMNs, and determining the network function activating states of different PLMNs according to the indication information. A UE can selectively access a PLMN according to the network function activating states of different PLMNs; therefore, the network performance and utilization of network resources are improved.