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The road network is an important carrier for the realization of spatial transfer and flow of passenger flow, cargo flow and information flow, and plays an important supporting role in social and economic development. Accessibility is an important indicator for evaluating regional traffic conditions. It is of great significance for the system to comprehensively analyze the accessibility of a certain region. Therefore, this paper uses GF-6 remote sensing image, DEM and road network data in the research area, and uses the time cost distance model to analyze the road accessibility in the research area. The research shows that the regional accessibility of Pingtou Village in Fengyi Town of Mao County is the best, followed by the area along National Highway 213, and the accessibility of the rest areas is poor. The overall spatial pattern of accessibility is significantly different. Terrain and economic factors have significant impacts on road accessibility. The research results can provide protection and management services for National Highway 213 in Mao County, and also provide data support for disaster prevention and relief work.
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