Polarization imaging technology deeply excavates the light intensity， spectrum and polarization information of light wave， and synthetically considers the formation mechanism of haze image， and combines atmospheric scattering imaging models to estimate target multi-dimensional physical information to effectively restore real scene images. At present， polarization dehazing technology has been extensively used and leading research results in many fields such as intelligent transportation and security monitoring. The basic principle， physical model， algorithm technology and imaging effect of polarization dehazing technology are systematically introduced， and polarization dehazing technology is analyzed and prospected according to the advantages and disadvantages of the existing technologies.