A method for detecting downlink control information, DCI, comprising: acquiring a pilot port determining parameter that corresponds to DCI needing to be detected, wherein a pilot port comprises an antenna port used by a pilot signal; determining, according to the pilot port determining parameter, a first-type pilot port that corresponds to the DCI, wherein the first-type pilot comprises a demodulation reference signal, DMRS; and detecting the DCI according to the first-type pilot port, wherein the pilot port determining parameter is determined according to at least one of the following: a carrier index, configuration information of a second-type pilot, resource configuration information of the DCI, and a layer index of the DCI, wherein the carrier index is an index of a carrier scheduled by using the DCI, wherein the second-type pilot comprises a channel state information reference signal, CSI-RS, or a cell-specific common reference signal, CRS, wherein the layer index of the DCI corresponds with a port number, wherein different ports are used for transmitting the DCI at different layers, wherein the resource configuration information of the DCI comprises any one or a combination of the following: a size of a time-frequency resource of the downlink control information; a time domain position of a resource of the downlink control information; a frequency domain position of the resource of the downlink control information; and precoding information used by the downlink control information, and wherein the DCI may be carried by different enhanced physical downlink control channel, EPDCCH, in different carriers. acquiring a pilot port determining parameter that corresponds to DCI needing to be detected, wherein a pilot port comprises an antenna port used by a pilot signal; determining, according to the pilot port determining parameter, a first-type pilot port that corresponds to the DCI, wherein the first-type pilot comprises a demodulation reference signal, DMRS; and detecting the DCI according to the first-type pilot port, wherein the pilot port determining parameter is determined according to at least one of the following: a carrier index, configuration information of a second-type pilot, resource configuration information of the DCI, and a layer index of the DCI, wherein the carrier index is an index of a carrier scheduled by using the DCI, wherein the second-type pilot comprises a channel state information reference signal, CSI-RS, or a cell-specific common reference signal, CRS, wherein the layer index of the DCI corresponds with a port number, wherein different ports are used for transmitting the DCI at different layers, wherein the resource configuration information of the DCI comprises any one or a combination of the following: a size of a time-frequency resource of the downlink control information; a time domain position of a resource of the downlink control information; a frequency domain position of the resource of the downlink control information; and precoding information used by the downlink control information, and wherein the DCI may be carried by different enhanced physical downlink control channel, EPDCCH, in different carriers.