Soil is the foundation for human survival, the most important environmental information reflected in earth remote sensing images and also the basis for studying other environmental elements. So, it is of great significance to study the characteristics of soil. At present, there has been a few studies of the polarized thermal radiation characteristics of soil in 2π space. In this paper, the polarized radiance of soil is measured. The result shows that the polarized radiance of different soil types is different at different detection angles. At the detection angle of 60°, the study of the polarized radiance of soil is more effective. With the change of the azimuth angle, the polarized radiance of soil will change. In the range from 0° to 60°, the polarized radiance of soil has a rising trend with the increase of the azimuth angle. But in the range from 240° to 320°, the polarized radiance of soil has a declining trend. The change of the detection band will cause the polarized radiance of soil to be changed. The order is CH1>CH4>CH4>CH2. The polarizing angle has a certain influence on the polarized radiance of soil too, but the fluctuation amplitude is gentle. For different soil types, the polarized radiance is different and the response to different factors is also different.