disclosed are a method , device , and system for reporting a channel quality indicator , applicable in solving the problem in coordinated multipoint transmission technology of the incapability of a network side to execute accurately resource distribution and scheduling due to the incapability of the network side to have accurate knowledge of the interference that a terminal is being subjected to . the method is : on the basis of measurement reference signals transmitted by each device in a measurement collection , the terminal feeding back to a network side device an initial cqi of each device in the measurement collection ; on the basis of the initial cqi of each device fed back by the terminal , and of channel matrix reference information fed back by the terminal , the network side device calculating a target cqi of the terminal . this allows the network side to learn accurately the interference that the terminal is being subjected to , thus allowing for accurate execution of terminal scheduling , resource distribution , and mcs selection , for effectively improved system throughput in coordinated multipoint transmission , and for improved system performance .