The invention relates to a method using pilot frequency inserting to restrain the phase noise in the orthogonal frequency division multiplexing system, belonging to the transmission of digital information technical field. The method includes carrying the symbol mapping process at the transmitting terminal after the input signals are processed with scrambling code, channel encoding to generate thedata symbols; obtaining the frame head; making up of the continuous pilot frequency composed of a pseudorandom sequence and guard gap, inserting the continuous pilot frequency into the data symbols, then processing disperse inverse Fourier transform to get the frame; multiple connecting the frame head and the frame to transmit after back end processing; processing frequency domain equilibrium using the estimated channel response at the receiving end, then carrying linear correlation on the poised signals and the pseudo random sequence to obtain the frequency domain estimated value of the phase noise; carrying disperse inverse Fourier transform on the frequency domain estimated value of the phase noise, than processing the phase correction on the received signals in the time domain to get the compensated signals. The computer simulation shows that the invention can effectively eliminate the phase noise interference with low arithmetic complexity and simple implement.