The frequency spectrum management apparatus includes a processing circuit, and the processing circuit is configured to: determine, in response to a frequency spectrum resource request from one or more secondary systems, available frequency spectrum information about each secondary system; determine, according to frequency spectrum management information from the one or more secondary systems, a managed secondary system managed by a frequency spectrum coordination apparatus and a non-managed secondary system not managed by the frequency spectrum coordination apparatus; determine, based on system information about the managed secondary system, a non-managed secondary system, the interference thereof with respect to the managed secondary system exceeding a predetermined threshold value, to be an interference secondary system; and acquire system information, about the interference secondary system, to be sent to the frequency spectrum coordination apparatus, so that the frequency spectrum coordination apparatus coordinates the frequency spectrum usage of the managed secondary system.