A method for transmitting a power saving instruction signal, characterized in that, the method comprises: configuring, by a network device, preset frequency-domain transmission resources for a terminal according to a preset rule; assigning, by the network device, a wake-up identifier for at least one terminal to be awakened; transmitting, by the network device, the wake-up identifier to the at least one terminal to be awakened through Radio Resource Control, RRC, signaling; determining, by the network device, a wake-up identifier of a terminal to be awakened; wherein the terminal to be awakened is a terminal that needs to be awakened during a Discontinuous Reception cycle; and the wake-up identifier is configured by the network device for at least one terminal to be awakened; generating, by the network device, the power saving instruction signal according to the wake-up identifier; wherein the power saving instruction signal instructs the terminal to be awakened to monitor a Physical Downlink Control Channel (PDCCH), during the DRX cycle after determining that the wake-up identifier carried in the power saving instruction signal equal to its own wake-up identifier, and transmitting, by the network device, the power saving instruction signal to the terminal on the preset frequency-domain transmission resources; wherein the DRX cycle comprises N continuous DRX cycles or N discontinuous DRX cycles; or, the DRX cycle is an M th DRX cycle after the power saving instruction signal; and the N and M are positive integers greater than or equal to 1; wherein if the network device determines that the power saving instruction signal to be transmitted on the frequency-domain transmission resources collide with one or more of a synchronization signal, a broadcast signal, a discovery signal and a pilot signal, the power saving instruction signal is not transmitted on the frequency-domain transmission resources. configuring, by a network device, preset frequency-domain transmission resources for a terminal according to a preset rule; assigning, by the network device, a wake-up identifier for at least one terminal to be awakened; transmitting, by the network device, the wake-up identifier to the at least one terminal to be awakened through Radio Resource Control, RRC, signaling; determining, by the network device, a wake-up identifier of a terminal to be awakened; wherein the terminal to be awakened is a terminal that needs to be awakened during a Discontinuous Reception cycle; and the wake-up identifier is configured by the network device for at least one terminal to be awakened; generating, by the network device, the power saving instruction signal according to the wake-up identifier; wherein the power saving instruction signal instructs the terminal to be awakened to monitor a Physical Downlink Control Channel (PDCCH), during the DRX cycle after determining that the wake-up identifier carried in the power saving instruction signal equal to its own wake-up identifier, and transmitting, by the network device, the power saving instruction signal to the terminal on the preset frequency-domain transmission resources; wherein the DRX cycle comprises N continuous DRX cycles or N discontinuous DRX cycles; or, the DRX cycle is an M th DRX cycle after the power saving instruction signal; and the N and M are positive integers greater than or equal to 1; wherein if the network device determines that the power saving instruction signal to be transmitted on the frequency-domain transmission resources collide with one or more of a synchronization signal, a broadcast signal, a discovery signal and a pilot signal, the power saving instruction signal is not transmitted on the frequency-domain transmission resources.