A configuration method for a sounding reference signal in a Long Term Evolution Advanced, LTE-A, system, comprising: an eNB triggering one or multiple User Equipment, UE, to transmit an aperiodic Sounding Reference Signal, SRS, on one or multiple uplink subframes through a downlink control signaling, after receiving the downlink control signaling sent by the eNB, the UE using aperiodic SRS resources to transmit the aperiodic SRS on the uplink subframes according to the triggering of the eNB, characterized in that the frequency domain initial position of the aperiodic SRS on a first subframe in the uplink subframes is the same as the frequency domain initial position of a next periodic SRS to be sent, or the frequency domain initial position of the aperiodic SRS on the first subframe in the uplink subframes is the same as the frequency domain initial position of the periodic SRS prior to a transmission subframe of the aperiodic SRS; when the eNB triggers the UE to transmit the aperiodic SRS on multiple uplink subframes, for the rest of the uplink subframes except the first subframe in the uplink subframes, the frequency domain initial position of the aperiodic SRS on the rest of the uplink subframes is the same as the frequency domain initial position of the aperiodic SRS on the first subframe, or the frequency domain initial position of the aperiodic SRS in the rest of the uplink subframes is obtained through calculation according to a frequency hopping rule of the periodic SRS, the first subframe in the uplink subframes is: a subframe predetermined by the eNB and UE in advance, or a subframe informed by the eNB implicitly to the UE through a downlink subframe transmitting the downlink control signaling, or a subframe informed by the eNB to the UE through the downlink control signaling. an eNB triggering one or multiple User Equipment, UE, to transmit an aperiodic Sounding Reference Signal, SRS, on one or multiple uplink subframes through a downlink control signaling, after receiving the downlink control signaling sent by the eNB, the UE using aperiodic SRS resources to transmit the aperiodic SRS on the uplink subframes according to the triggering of the eNB, characterized in that the frequency domain initial position of the aperiodic SRS on a first subframe in the uplink subframes is the same as the frequency domain initial position of a next periodic SRS to be sent, or the frequency domain initial position of the aperiodic SRS on the first subframe in the uplink subframes is the same as the frequency domain initial position of the periodic SRS prior to a transmission subframe of the aperiodic SRS; when the eNB triggers the UE to transmit the aperiodic SRS on multiple uplink subframes, for the rest of the uplink subframes except the first subframe in the uplink subframes, the frequency domain initial position of the aperiodic SRS on the rest of the uplink subframes is the same as the frequency domain initial position of the aperiodic SRS on the first subframe, or the frequency domain initial position of the aperiodic SRS in the rest of the uplink subframes is obtained through calculation according to a frequency hopping rule of the periodic SRS, the first subframe in the uplink subframes is: a subframe predetermined by the eNB and UE in advance, or a subframe informed by the eNB implicitly to the UE through a downlink subframe transmitting the downlink control signaling, or a subframe informed by the eNB to the UE through the downlink control signaling.