Abstract: Research on the road connectivity and its response to geological hazards in Yadong County, Tibet, is of great significance to improve the regional connectivity of road networks and enhance the emergency evacuation capacity to mountain hazards. In this paper, the road and geohazard data of Yadong County are obtained from the high-definition remote sensing images and field work. And then the comprehensive performance of the roads in Yadong County is assessed by using the fuzzy hierarchy method. Furthermore, a road connectivity model and a geohazard index model are constructed to explore the influence of geohazards on road connectivity. The results show that: ① Twenty-nine geological hazards sites are found in Yadong County and they are distributed mainly in the southwestern region of the county, most of which are collapse sites. ② The road network of Yadong County demonstrates typical tree-like network characteristics, with good comprehensive performance but uneven spatial development. ③ The global connectivity of the road network shows a spatial pattern of “three cores, two axes and one circle”: the specific connectivity among different regions displays obvious spatial differences with four high value areas; while the central connectivity demonstrates a clear circular structure and significant distance decay distribution. ④ The geological hazards in Yadong County have the greatest impacts on the road connectivity from the settlements to the townships, followed by the impacts on the road connectivity from the settlements to the county government, and the road connectivity from the settlements to the nearest townships.