A apparatus for radio frequency power amplification, a radio frequency power amplification method, a transmitter, and a base station that can reduce nonlinear signal distortion factors are disclosed. The radio frequency power amplification system includes: a radio frequency signal generation circuit, configured to process a baseband digital signal, to obtain an original radio frequency signal; a radio frequency signal processing circuit, configured to process the original radio frequency signal, to obtain N processed radio frequency signals, where N is greater than or equal to 2; a power amplifier, configured to perform power amplification on each of the N processed radio frequency signals, to obtain N amplified radio frequency signals; and a combiner, configured to combine the N amplified radio frequency signals.