The coupling technology of the pixel polarization imaging system was studied by aligning the pixel polarizer array with the CCD photosensitive element. Aiming at the problem that the polarizer group array and CCD size do not match, a variety of process methods were used for processing, and a complete coupling alignment process was proposed. The imaging system developed in this paper can obtain four Stokes components with different polarization directions through one imaging detector. After operation and post-processing, it could also obtain the linear polarization image and the linear polarization angle image of the captured object, which realized the polarization enhancement of the image. The required polarization image facilitates the acquisition of target information in a complex environment.