Abstract: The visual simulation of the Mars surface environment is very important for the demonstration and verification of Mars exploration scheme. In this paper, according to the real Martian scene data, a 3D visual model of the Martian surface environment is designed and constructed based on unreal Engine 4 digital simulation software, which meets the requirement of modeling the Martian surface digital environment. The designed simulation model not only includes sand slope, sand pit, hills and other terrain, but also adds lighting, sand and dust conditions, which makes the model closer to the real environment and meets the requirements of visual effect and authenticity.

Key words: Mars surface environment, visual simulation, UE4, topography