An interference coordination method, apparatus, and system are provided in a communications system, which including a first cell and at least one neighboring cell of the first cell. A first cell management apparatus corresponding to the first cell sends configuration information of an uplink reference signal to at least one second cell management apparatus corresponding to the at least one neighboring cell, so that each second cell management apparatus measures the uplink reference signal sent by UE within the first cell, to obtain a second measured value; and the first cell management apparatus measures the uplink reference signal sent by the UE, to obtain a first measured value; an interference coordination apparatus coordinates downlink transmit power of the first cell and the at least one neighboring cell according to the first measured value and at least one second measured value, which effectively reduces inter-cell interference and increases a network capacity.