Communication method and device

The invention provides a communication method and device, belongs to the technical field of communication, and aims to avoid the situation that a terminal cannot be switched successfully all the time. In the method, under the condition of continuous multiple switching failures, NCC indication information may be overturned when representing an updated NCC, for example, a value represented by the NCC indication information is a value after the updated NCC is overturned. At the moment, the NCC of the network side and the NCC of the terminal are not synchronized, so that subsequent switching cannot be successful. Therefore, the mobile management network element sends the NCC flipping information and the NCC indication information to the terminal, so that the terminal knows whether the NCC indication information is flipped or not when representing the updated NCC according to the NCC flipping information, thereby determining the same NCC as the mobile management network element, ensuring NCC synchronization, and a