With the help of DEA model and ArcGIS spatial analysis module,the paper systematically analyzes the evolution of temporal and spatial pattern of urban tourism development of Pan-Yangtze River Delta from 1998 to 2008.According to the change decomposition model of total factor productivity(Malmquist index),it comprehensively discusses the evolutionary process of overall trend of TFP change,structure and the temporal and spatial pattern.The results show that the urban tourism development efficiency of Pan-Yangtze River Delta has presented an increasing trend and characteristics of urban difference display a distinct fluctuation.Formation and evolution of the spatial pattern of tourism development efficiency have the spatial relationship.Overall efficiency,pure technical efficiency and scale efficiency have a significant spatial autocorrelation,at the same time overall efficiency and scale efficiency have formed a similar changing pattern.However,the change of total factor productivity displays weak clustering and the correlation of adjacent geographical units is not good.Autocorrelation and its change of tourism development efficiency cause the spatial unbalance of tourism development efficiency to a large extent.Therefore,the spatial cost effect made by location in the process of tourism development is more distinct and the characteristic of geographical space plays a crucial role in the process of tourism development efficiency.The analytical result of the driving mechanism of temporal and spatial pattern evolution of tourism development efficiency shows that the three driving aspects of economic policy orientation,tourism production unit value and tourism consumption demand stimulus lead to the spatial pattern replacement of tourism development efficiency.