The laser radar using time-correlated single-photon counting technology has higher sensitivity, and the ability of target recognition can be increased by using polarization detection technology. A time-correlated single-photon counting imaging system based on polarization detection is built to image targets of different materials, the same depths and different depths. The results show that when the number of photons in a single pulse echo is 0.04, the polarization information of the target echo can be obtained by using the polarization detection method, and compared with the intensity image and the depth image, the edge of the target in the polarization image is clearer.