In order to realize polarization imaging of dynamic scene, a simultaneous imaging polarimetry with double separate Wollaston prism is designed. This system is a combination of division-of-amplitude and divisionof-aperture, which can achieve four polarization images simultaneously on two detectors synchronized by external trigger. The principle of the system is briefly illustrated, and the design of optical system, choice of core devices and opto-mechinal design are emphatic introduced. The polarization imaging experiments of system are analyzed. The experimental results show that system performance on polarization splitting is well, and the residual gray level of polarization extinction image is under 15 with four 8 bit detector; the maximum frame rate can reach 90 Hz with external trigger, and polarization image of dynamic scene is sampled at 25 Hz; the system can focus on any distance larger than the nearest image distance, and system resolution reaches 76.9 cyc/mrad.