This paper derives the polarization scattering matrix of both the warship target and the interferential chaff conditioned on the exit of rain and snow cluster, and furthermore, proposes a method to recognize the chaff and warship by analyzing their corresponding polarization information. This method mainly aims to the radar, which can receive both the left and right circularly polarized wave to catch the full polarization information of echoes, and then acquires more accurate polarization characteristics of the target and chaff after getting rid of the impacts of rain and snow cluster from the polarization scattering power matrix of echoes. In order to further improve the recognition probability, the non-linear polarization transformation is introduced to make the separa-tion of target and chaff more realizable. It indicates that the resulting performance is incredible for the tradition-al recognition in time and frequency domain.