The study of polarization characteristics of sea surface scene is of great significance to infrared polarization target detection, and sea surface modeling is the key step of sea surface polarization simulation. The influence of wave spectrum model and spatial sampling points on sea surface modeling is analyzed, and a correction method is established, which superimposes the high frequency component of wave spectrum to the low frequency component in the exponential form. Combining RadTherm software with the polarization degree calculation model, the long-wave infrared polarization characteristics of simulated sea surface generated by the proposed method and the traditional method are compared.The simulation results show that the proposed method can effectively improve the consistency among the height distribution of simulated sea surface, the microfacet slope distribution of simulated sea surface and the measured sea surface data at a low spatial sampling rate.