This paper takes Nanjing Xuanwu Lake Park as the empirical object and Qingliang Mountain Park as the control experiment object.Based on the investigation of the ecological environment of the base,with the help of the spatial analysis function of ArcGIS software,five ecological sensitive factors,namely,elevation,slope,aspect,normalized difference vegetation index and land use type are selected to complete the single-factor ecological sensitivity analysis by using the hierarchical analysis method,and then obtain the comprehensive ecological sensitivity layout map by the weighted superposition method.The superposition analysis of the ecological sensitivity layout and the distribution of crowd activities show that they are highly overlapping and therefore the crowd activities render it infeasible to maintain ecological sensitivity in comprehensive parks,community parks,amusement parks and other urban parks in the general sense.The ecological design of urban parks was not a simple application of landscape ecology theory.The practical scope of ecological design of urban parks was discussed from three aspects:landscape pattern of urban green space system,overall or local ecological process in parks,and"natural park"in special parks.