Abstract: This paper describes the conceptual design of the self propelling chassis developed by Russia for the ESA project ЕxoМars. In the context of the complex environment on the surface of the Mars, several design plans of the Mars probe chassis are discussed, among which the optimized plan of 6×6×4＋4 ш is identified, that means four steering drives and four stepped-driven wheels-stepping device and balanced suspension. The scale model prototype developed according to the optimized plan was tested in the test field. The results show that the conceptual design of the self propelling chassis is correct, and can increase the mobility, stability and reliability of the planet rover. In the end, some proposals are put forward in light of implementing China's deep space exploration projects.