Abstract: Trachypithecus francoisi, the national first-class protected animal, whose habitat has been destroyed and is in danger due to human activities now. In this study, taking Jinfo mountain, the main distribution area of Trachypithecus francoisiin in Chongqing, as an example, seven environmental impact factors closely related to the habitat are selected from the aspects of topography, vegetation, human activities and drinking water factors, and the habitat suitability of the Trachypithecus francoisito analyzed. The ecological corridor between potential habitats is constructed using the minimum cumulative resistance (MCR) model. The results show that the most suitable habitat area is 178.07 km²,accounting for only 12.15% of the total area of the study area. The Trachypithecus francoisi mainly distributes in the valleys in the middle and northeast of Jinfo mountain. The potential habitat patches are strip-shaped,obviously fragmented, with high altitude, steep slope, proximity to water source,high vegetation coverage and far away from human disturbance. There are 56 ecological corridors constructed,with a minimum width of 303.9 m, a total length of 147.82 km and a total area of 43.89 km². This study has important guiding significance for the protection of the population and habitat of the Trachypithecus francoisi.

Key words: Trachypithecus francoisi, analytic hierarchy process, minimum cumulative resistance, habitat suitability, ecological corridor, Jinfo mountain