A method for notifying uplink and downlink configuration information, applied to a long term evolution system, comprising: a base station sending to a user equipment, UE, a downlink control information format, wherein the downlink control information format carries uplink and downlink configuration information used for indicating an uplink and downlink configuration; wherein, a position of the uplink and downlink configuration information in the downlink control information format is determined in any one of the following ways: determined through an upper layer signaling; determined in a predefined way; determined based on a mapping relationship of the position with an index of a serving cell; determined based on a mapping relationship of the position with a carrier indication control field, CIF; determined based on a mapping relationship of the position with a configuration parameter of a reference signal used for acquiring channel state information, CSI-RS-Config; determined based on a mapping relationship of the position with a quasi co-location, QCL, configuration parameter; wherein, the position of the uplink and downlink configuration information in the downlink control information format refers to an index value of a control field in the downlink control information format. a base station sending to a user equipment, UE, a downlink control information format, wherein the downlink control information format carries uplink and downlink configuration information used for indicating an uplink and downlink configuration; wherein, a position of the uplink and downlink configuration information in the downlink control information format is determined in any one of the following ways: determined through an upper layer signaling; determined in a predefined way; determined based on a mapping relationship of the position with an index of a serving cell; determined based on a mapping relationship of the position with a carrier indication control field, CIF; determined based on a mapping relationship of the position with a configuration parameter of a reference signal used for acquiring channel state information, CSI-RS-Config; determined based on a mapping relationship of the position with a quasi co-location, QCL, configuration parameter; wherein, the position of the uplink and downlink configuration information in the downlink control information format refers to an index value of a control field in the downlink control information format. determined through an upper layer signaling; determined in a predefined way; determined based on a mapping relationship of the position with an index of a serving cell; determined based on a mapping relationship of the position with a carrier indication control field, CIF; determined based on a mapping relationship of the position with a configuration parameter of a reference signal used for acquiring channel state information, CSI-RS-Config; determined based on a mapping relationship of the position with a quasi co-location, QCL, configuration parameter; wherein, the position of the uplink and downlink configuration information in the downlink control information format refers to an index value of a control field in the downlink control information format. <EOS>