A channel state measurement method, comprising: receiving channel state information, CSI, reporting mode indication information, wherein the CSI reporting mode indication information is used to instruct to perform CSI measurement and feedback based on N pieces of associated CSI measurement configuration information, and N is an integer greater than 1; and performing CSI measurement and feedback according to the CSI reporting mode indication information, wherein the performing CSI measurement is based on coordinated multipoint multi-stream transmission and comprises: determining a precoding matrix indicator, PMI, corresponding to a channel state information-reference signal, CSI-RS, indicated by each of the N pieces of associated CSI measurement configuration information; and determining, based on a downlink channel and interference that are corresponding to each of the N pieces of associated CSI measurement configuration information, a channel quality indicator, CQI, corresponding to each of the N pieces of associated CSI measurement configuration information, wherein a downlink channel and interference that are corresponding to one piece of CSI measurement configuration information are obtained based on PMIs corresponding to CSI-RSs indicated by the N pieces of associated CSI measurement configuration information, and the interference corresponding to the CSI measurement configuration information comprises interference outside antenna ports specified by the N pieces of associated CSI measurement configuration information, and interference obtained after a CSI-RS indicated by one piece of CSI measurement configuration information other than the CSI measurement configuration information is processed based on a corresponding PMI. receiving channel state information, CSI, reporting mode indication information, wherein the CSI reporting mode indication information is used to instruct to perform CSI measurement and feedback based on N pieces of associated CSI measurement configuration information, and N is an integer greater than 1; and performing CSI measurement and feedback according to the CSI reporting mode indication information, wherein the performing CSI measurement is based on coordinated multipoint multi-stream transmission and comprises: determining a precoding matrix indicator, PMI, corresponding to a channel state information-reference signal, CSI-RS, indicated by each of the N pieces of associated CSI measurement configuration information; and determining, based on a downlink channel and interference that are corresponding to each of the N pieces of associated CSI measurement configuration information, a channel quality indicator, CQI, corresponding to each of the N pieces of associated CSI measurement configuration information, wherein a downlink channel and interference that are corresponding to one piece of CSI measurement configuration information are obtained based on PMIs corresponding to CSI-RSs indicated by the N pieces of associated CSI measurement configuration information, and the interference corresponding to the CSI measurement configuration information comprises interference outside antenna ports specified by the N pieces of associated CSI measurement configuration information, and interference obtained after a CSI-RS indicated by one piece of CSI measurement configuration information other than the CSI measurement configuration information is processed based on a corresponding PMI. determining a precoding matrix indicator, PMI, corresponding to a channel state information-reference signal, CSI-RS, indicated by each of the N pieces of associated CSI measurement configuration information; and determining, based on a downlink channel and interference that are corresponding to each of the N pieces of associated CSI measurement configuration information, a channel quality indicator, CQI, corresponding to each of the N pieces of associated CSI measurement configuration information, wherein a downlink channel and interference that are corresponding to one piece of CSI measurement configuration information are obtained based on PMIs corresponding to CSI-RSs indicated by the N pieces of associated CSI measurement configuration information, and the interference corresponding to the CSI measurement configuration information comprises interference outside antenna ports specified by the N pieces of associated CSI measurement configuration information, and interference obtained after a CSI-RS indicated by one piece of CSI measurement configuration information other than the CSI measurement configuration information is processed based on a corresponding PMI.