The present disclosure provides an antenna, a base station, and a beam processing method. The method includes: performing, by a hybrid network, phase adjustment for signals received from a base station transceiver, generating signals having a preset phase, and sending the signals to a power dividing apparatus; performing, by the power dividing apparatus, amplitude adjustment for the signals, and outputting multipath signals having an array amplitude and the preset phase to multiple antenna arrays; and transmitting, by the multiple antenna arrays, the multiple signals having the array phase and the array amplitude, where in the multipath signals, the array phase of each path of signals is the same as the preset phase, or the array phase of at least one path of signals is opposite to the preset phase. The present disclosure reduces the complexity and cost of a beamforming network.