Abstract: In order to improve the accuracy of recognition of camouflaged target，the method of camouflage target recognition based on the fusion of spectral and polarization information was proposed. A polarization spectral imaging system based on liquid crystal tunable filter（LCTF）was constructed. The polarization spectral detecting experiment of plants was conducted by the system. Band selection for the target spectral image of each polarization direction was conducted by the principal component analysis （PCA）. The degree of polarization of spectral fusion image was calculated, and the polarization spectral fusion image was finally obtained. The result shows that, compared with the spectral fusion image, the information entropy of polarization spectral fusion image improves by 72%, and the average gradient improves by 250%.