Embodiments of the present invention provide a method and device for reporting reference signal received power. A base station determines at least one first channel-state information reference signal CSI-RS resource used by a terminal to report reference signal received power RSRP, where the first CSI-RS resource includes at least one antenna port group, and the antenna port group includes at least one antenna port; the base station sends first CSI-RS resource configuration information to the terminal, where the first CSI-RS resource configuration information carries the at least one first CSI-RS resource; and the base station receives RSRP that is of each antenna port group included in the first CSI-RS resource and is reported by the terminal. The embodiments of the present invention save overheads of reporting RSRP.