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With the comprehensive economic strength of the urban agglomeration in the middle reaches of the Yangtze River, the more closely the economic linkage between urban system within urban agglomeration, the higher demand on spatial structure of urban system. This paper comparatively analyses spatial aggregation dimension and spatial correlation dimension of 56 cities of Wuhan urban agglomeration, Changzhutan urban agglomeration, Poyang Lake urban agglomeration in the urban agglomeration in the middle reaches of the Yangtze River by the fractal method, achieves 4 conclusions: 1 3 urban agglomerations in the middle reaches of the Yangtze River have the spatial fractal character; 2 Crow fractal dimension of Wuhan urban agglomeration is the highest, Changzhutan urban agglomeration the lowest, the spatial distribution of urban system is relatively concentrated; 3 The spatial structure of the three urban agglomerations presents the characteristics of axis, cities distribution along the high-speed channel; 4 Traffic network accessibility of urban system of the three urban agglomerations is good, Traffic network accessibility of Poyang Lake urban agglomeration is the best in the urban agglomeration in the middle reaches of the Yangtze River, that of Wuhan urban agglomeration is the worst.

A Comparative Study on the Spatial Structure of Urban Agglomeration in the Middle Reaches of the Yangtze River Based on Fractal Theory