本文运用同构指数、重合度指数及差异性指数研究1994—2009年长三角入境旅游的发展趋同与趋异问题。结果表明:整体上长三角的入境旅游中江浙、江沪、浙沪及平均值都经历了三个变化阶段,第一个阶段是1994—1997年间,四者的相似指数和重合度指数都下降,表现出了趋异方向的发展;第二阶段是1997—2008年间(2002年除外),相似指数和重合度指数都增大,表明它们之间朝着趋同方向发展;第三阶段是2009年,相似指数和重合度指数又有所下降,即再次向趋异方向发展。最后根据长三角入境旅游发展的变化格局,提出长三角旅游应该继续坚持走一体化的合作之路,从而带动整个长三角旅游业的共同协调发展。 This article uses isomorphism index, coincidence index and difference index to study the development convergence and divergence of inbound tourism in the Yangtze River Delta from 1994 to 2009. The results show that in the whole Yangtze River Delta, inbound tourism in Jiangsu, Zhejiang, Jiangsu, Zhejiang and Shanghai have undergone three changes in the average period, the first stage is 1994-1997, the four similarities and coincidence index decreased , Showing a trend of divergence; the second stage is 1997-2008 (except 2002), the similarity index and coincidence index are increased, indicating that they are moving in the direction of convergence; the third stage is 2009 , The similarity index and the coincidence index declined again, that is to say, the trend of divergence was again developed. Finally, according to the changing pattern of the inbound tourism development in the Yangtze River Delta, it is suggested that the Yangtze River Delta tourism should continue to adhere to the road of integrated cooperation so as to promote the coordinated development of the tourism industry in the whole Yangtze River Delta.