Spectral polarization detection can obtain rich target parameters including spectrum, radiant intensity, polarization state and so on, which is beneficial to improving the ability of target detection and identification. Identification method of camouflaged objects based on long wave infrared hyperspectral polarization characteristic was introduced in this paper. The measuring system of long wave infrared hyperspectral polarization was set up. The measuring experiments of polarization characteristic of two types of camouflaged objects at different temperatures were carried out. Effective experimental data were obtained and analyzed. The results showed that: due to the influence of basal material thermal conductivity, the upgrade of spectral degree of polarization of two types of camouflaged objects with the same coating is significantly greater than spectral radiance at the same difference of temperature. As the difference of temperature increases, the upgrade difference of spectral degree of polarization increases. The band selectivity rule is also showed. The identification problem will be effectively solved by use of the upgrade difference of spectral degree of polarization of two types of camouflaged objects.