ing at the problems that traditional spectral polarization imaging technology requires dynamic modulation, low luminous flux and limited spectral resolution, a new imaging method based on computational spectral imaging technology and pixel-level polarization detection is proposed. The dual-channel format is used for obtaining high-resolution spatial, spectral, and polarization target information through single imaging. Further, a dual-channel experimental device with a coded-aperture spectral polarization imaging channel and a polarization imaging channel is established to obtain spectral data cubes with four polarization states in 25 bands in the range of 450-650 nm, as well as the polarization degree and polarization angle of each band. The spectral resolution of proposed method is better than 10 nm, and the spectral reconstruction accuracy is approximately 86.3%. Furthermore, the spectral reconstruction accuracy is observed to improve by 10.5 percentage points when compared with that of the single-channel imaging method.