Method and system and base station for indicating feedback of multi-aerial system

The embodiment of the invention discloses a method and a system and a base station for indicating the feedback of a multi-aerial system. The method comprises the following step: sending indicating information to user equipment UE, wherein the indicating information is used for indicating that the UE feeds back an order according to the indicating information and PMI and CQI corresponding to the order. The base station informs the UE of feeding back the order, the PMI and the CQI according to the indicating information through the indicating information so as to always obtain feedback parameters matched with transmission data, thereby the embodiment of the invention prevents unnecessary order backspacing operation under certain scenes and enhances the transmission quality.