Abstract: In this study, copper sulfide/polyaniline@leather (CuS/PANI@Leather) with photothermal properties was prepared by in-situ polymerization of polyaniline (PANI) on leather and in-situ growth of copper sulfide. The morphology and structure of CuS/PANI@Leather were characterized by SEM and XRD, and the photothermal properties of CuS/PANI@Leather were evaluated by xenon light source. The results show that CuS/PANI@Leather has excellent photothermal conversion performance, and the solar spectral absorption rate is 94.5%. Under a standard solar irradiance, CuS/PANI@Leather can increase to 89.8℃, and under the irradiation of a low optical density of 200 W/m², CuS/PANI@Leather can still reach 45℃. Meanwhile, under the response of multiple optical switches, CuS/PANI@Leather tends to maintain a stable photothermal temperature. It has good photothermal cycle stability.