A method for sending information, comprising: determining, by a base station, energy-saving configuration information of a terminal; determining, by the base station, physical downlink control channel, PDCCH, detection window information; and sending, by the base station, PDCCH detection indication information to the terminal based on the energy-saving configuration information of the terminal and the PDCCH detection window information, wherein the PDCCH detection indication information indicates whether the terminal performs PDCCH detection in a PDCCH detection window; wherein the energy-saving configuration information comprises at least one of following information: whether the terminal has an ability to support an energy-saving configuration; whether the terminal is configured to support an energy-saving configuration; an energy-saving mechanism of the terminal; or a wake-up mechanism of the terminal; wherein the PDCCH detection window information comprises: a quantity of PDCCH detection time units in the PDCCH detection window; and/or an interval of PDCCH detection time units in the PDCCH detection window; wherein a configuration mode of the PDCCH detection window information is dynamic configuration. determining, by a base station, energy-saving configuration information of a terminal; determining, by the base station, physical downlink control channel, PDCCH, detection window information; and sending, by the base station, PDCCH detection indication information to the terminal based on the energy-saving configuration information of the terminal and the PDCCH detection window information, wherein the PDCCH detection indication information indicates whether the terminal performs PDCCH detection in a PDCCH detection window; wherein the energy-saving configuration information comprises at least one of following information: whether the terminal has an ability to support an energy-saving configuration; whether the terminal is configured to support an energy-saving configuration; an energy-saving mechanism of the terminal; or a wake-up mechanism of the terminal; wherein the PDCCH detection window information comprises: a quantity of PDCCH detection time units in the PDCCH detection window; and/or an interval of PDCCH detection time units in the PDCCH detection window; wherein a configuration mode of the PDCCH detection window information is dynamic configuration. whether the terminal has an ability to support an energy-saving configuration; whether the terminal is configured to support an energy-saving configuration; an energy-saving mechanism of the terminal; or a wake-up mechanism of the terminal; wherein the PDCCH detection window information comprises: a quantity of PDCCH detection time units in the PDCCH detection window; and/or an interval of PDCCH detection time units in the PDCCH detection window; wherein a configuration mode of the PDCCH detection window information is dynamic configuration. a quantity of PDCCH detection time units in the PDCCH detection window; and/or an interval of PDCCH detection time units in the PDCCH detection window; wherein a configuration mode of the PDCCH detection window information is dynamic configuration.