As an important parameter of the global energy balance,climate,hydrological and ecological model,ice directly af-fects the energy balance of the earth-atmosphere system,weather and climate.It is of great significance to use the thermal infra-red polarization technology to study ice thermal radiation.For the ice monitoring and the impact of global climate change on the ice,studies on ice thermal radiation polarization characteristics were conducted based on the wavelength,detection angle and azi-muth angle.The results show that the wavelength has an obvious impact on the ice thermal radiation polarization properties.The polarized radiance of four bands shows that L_(CH_1) > L_(CH_3) > L_(CH_4) > L_(CH_2) while the polarization brightness temperature shows that T_(CH_4) > T_(CH_1) > T_(CH_2) > T_(CH_3).Its better to use the brightness temperature of the third channel than the radiance to study the ther-mal radiation polarization.The detection angle affects the ice thermal radiation polarization characteristics greatly and there are some differences between the polarization angles.The brightness temperature of ice is the lowest in the detection angle of 10° and the polarization angle of 30°,which are non-accidental factors.These was closely related to ice physical and chemical properties. The degree of ice polarization performance shows that P_0 < P_(40) < P_(30) < P_(50) < P_(10) < P_(20) and is affected by the detection angle, which is directly related to the differences in the brightness temperature at different polarization angles.The degree of polariza-tion changes with the azimuth angles and plays an important role in ice physical and chemical characteristics monitoring.The im-pact of azimuth angle on the ice thermal radiation polarization characteristics was not significant.And it is affected by the rough-ness of the surface,organizational structure and other factors which are direct results of ice emitted radiation at different azimuth ang les.