Abstract: ObjectiveThe ecological bearing capacity is the quantitative evaluation index for sustainable development.MethodIn order to make the dynamic analysis of ecological bearing capacity in Kanas Scenic Spot, the authors obtained information on the land use and natural landscape change in 1992, 2000, 2005 in Kanas Scenic Spot based on "3S". The evaluation indices system of ecological bearing capacity in Kanas Scenic Spot was established using principal components analysis (PCA) and analytic hierarchy process (AHP). On this basis, 13 indices including the resources, environment and social-economy, which were separated from the resource bearing capacity, environment bearing capacity, ecological elasticity and ecological bearing pressure, were chosen as the sustainable development degrees indices. And the whole Kanas Scenic Spot(or different period) was divided into several sustainable development degrees with different sustainability of ecosystems according to the ecological load-bearing (negative direction and positive direction) index calculated. ResultThe results showed the ecological bearing index in Kanas Scenic Spot was decreased from 0.066 9 in 1992,to 0.048 5 in 2000 and 0.004 6 in 2005.The sustainable bearing state was decreased from sustainal bearing capacity in 1992 and 2000 to the poor one in 2005.ConclusionWhich was occurred mainly due to the increasing of tourism development, population and economical activities. Thereby,all the obtained different data provided scientific basis for the regional sustainable development.