A method for power saving signal transmission, comprising: determining, by a base station, a type of a power saving signal based on system load or an amount of users, wherein the type of the power saving signal comprises a first physical downlink control channel, PDCCH, based power saving signal used for transmitting power-saving information of a single user and a second PDCCH-based power saving signal used for transmitting power-saving information of multiple users; transmitting (S202, S301), by the base station, first indication signaling, wherein the first indication signaling is used for notifying the determined type of the power saving signal and a corresponding size of downlink control information, DCI, the DCI carries power saving information of one or more users, the size of the DCI comprises an amount of bits occupied by the DCI, and the amount of bits has a correspondence relationship with the amount of users; wherein the power saving information is carried in the power saving signal in the DCI, and indicating, by the base station, a function of the power saving signal through the first indication signaling, wherein the function of the power saving signal comprises: waking up a terminal; indicating a target bandwidth used by the terminal; and indicating configuration information of a PDCCH search space; and transmitting (S203, S302) the power saving signal based on the determined type of power saving signal, the power saving signal carrying the power saving information via the DCI by the base station according to the first indication signaling, wherein the power saving information for each user is carried by a first number of bits, and the size of the DCI comprises the first number of bits multiplied by the amount of users, the first indication signaling comprising a second predefined number of bits, wherein each combination of the second predefined number of bits is mapped to a particular size of the DCI. determining, by a base station, a type of a power saving signal based on system load or an amount of users, wherein the type of the power saving signal comprises a first physical downlink control channel, PDCCH, based power saving signal used for transmitting power-saving information of a single user and a second PDCCH-based power saving signal used for transmitting power-saving information of multiple users; transmitting (S202, S301), by the base station, first indication signaling, wherein the first indication signaling is used for notifying the determined type of the power saving signal and a corresponding size of downlink control information, DCI, the DCI carries power saving information of one or more users, the size of the DCI comprises an amount of bits occupied by the DCI, and the amount of bits has a correspondence relationship with the amount of users; wherein the power saving information is carried in the power saving signal in the DCI, and indicating, by the base station, a function of the power saving signal through the first indication signaling, wherein the function of the power saving signal comprises: waking up a terminal; indicating a target bandwidth used by the terminal; and indicating configuration information of a PDCCH search space; and waking up a terminal; indicating a target bandwidth used by the terminal; and indicating configuration information of a PDCCH search space; and transmitting (S203, S302) the power saving signal based on the determined type of power saving signal, the power saving signal carrying the power saving information via the DCI by the base station according to the first indication signaling, wherein the power saving information for each user is carried by a first number of bits, and the size of the DCI comprises the first number of bits multiplied by the amount of users, the first indication signaling comprising a second predefined number of bits, wherein each combination of the second predefined number of bits is mapped to a particular size of the DCI.