A method for modeling receiver behavior based on polynomials is presented. First, a Hammerstein model structure is employed to build a receiver behavior model, and nonlinear module and memory linear module are utilized to characterize receiver nonlinearity and memory effects, respectively. Secondly, the nonlinear module parameters and the linear module parameters of the behavior model are identified by using the Fourier series and the least square method. Finally, the receiver nonlinear behavior modeling method is verified by simulation data of the receiver ADS model. The AM-AM characteristics and signal-tone time-domain waveforms of the ADS simulation and behavior model are compared and analyzed. The experimental results show that the AM-AM characteristic curve and the time-domain waveform of the receiver behavior model agree well with the ADS simulation data. The proposed method can predict the receiver's nonlinear response, and shows theoretical value for evaluating receiver nonlinear effects in complex electromagnetic environments.