Provided are a method for controlling the power of a carrier signal, user equipment and a base station. The method comprises: user equipment receives power control parameters sent by at least one base station with regard to at least two carrier signals, wherein the at least two carrier signals are signals sent over at least two aggregated carriers; the user equipment determines channel gain reference quantities corresponding to the at least two carrier signals according to the power control parameters, wherein the channel gain reference quantities are used for representing the magnitude of channel gain; and the user equipment controls the power of the at least two carrier signals according to the channel gain reference quantities. The technical solution of the present invention can effectively utilize the power resources of user equipment, thereby improving the network performance.