How to improve off- road mobility in the future battlefield environment is crucial to the success or failure of a campaign. The off- road is not only determined by the power unit and body performance of the vehicle itself, but also by the passability of various complex terrains. The bearing capacity of elements directly affects the passability of the road surface. In order to adapt to the future informationized battlefield with large depth, wide area, and high speed requirements this study simulated the mountain and forest battlefield environment, and carried out a special geological survey task in a certain area in Northeast China. The authors relied on this project conduct soil survey tasks, using simple bearing capacity measuring instruments to obtain the types of surface soil, physical properties of soil, and distribution characteristics of different areas, and with geological drilling, high- density electrical measurement and other technical means to obtain the soil layer structure characteristics and soil mechanics characteristics of the main traffic roads such as S202 and S319 in the study area, and made qualitative analysis and evaluation on the bearing capacity of the main soil types such as gravel soil, sandy, cohesive soil, and special soil. Based on the survey data, the main factors affecting the bearing capacity of the soil were analyzed, and the off- road mobility different road surfaces in the mountain and forest landscape was studied.