Circularly polarized light has a good "Polarization Memory" effect,To verify the influence of scattered light can be effectively suppressed by the di fference of helicity of circularly polarized light in strong scattering media,a nd circularly polarized light can realize target detection under complex backgro und.In this paper,based on the classical Mie scattering theory and Fresnel ref lection theory,combined with the polarized Monte Carlo method,a model of activ e circularly polarized light detecting targets in the scattered medium is constr ucted.The Stokes vector information of the circular polarized light after scatt ering by the medium and reflected by the target is analyzed statistically by tra cing the polarization state change of each photon.The simulation results show t hat the proposed method can clearly distinguish the existence of detected target s in the scattering media.Different media environment and different detection d istance will cause different degrees of attenuation to the polarization imaging of the target,and both circular polarization differential imaging and degree of circular polarization imaging can realize enhanced polarization imaging.The mo deling method in this paper can provide reference for theoretical research and p ractical application of full polarization detection.