The present invention discloses a method, a device, and a system for correcting phase noise, and relates to the field of signal processing, which can perform accurate correction on phase noise. A receiving device in the system for correcting phase noise includes: a transceiver module, configured to receive an output signal returned by a first antenna group and send the output signal to a mixer, where the output signal is generated by a transmitting device by mixing a signal, which is obtained by superposing an original signal and a pilot signal, with a first local oscillator signal; the mixer, configured to mix the output signal with a second local oscillator signal generated by an oscillator, to generate a first output signal; a digital filter, configured to filter the first output signal to extract a first pilot signal that carries phase noise; and a data processor, configured to obtain a phase noise superposition function according to the first pilot signal that carries phase noise and a pilot signal, and further configured to obtain a delayed original signal according to the phase noise superposition function and the first output signal. The present invention is applied to correction of phase noise.