Abstract: The paper constructs valuation index system of urbanization by using AHP methods, and combine the content of the urbanization and the reality of Wanjiang City Belt, to measure and evaluate the level of urbanization in Wanjiang City Belt, also use spatial correlation model to analysis spatial pattern of urbanization and then make suggestions, analyze urbanization mechanism of River-crossing Cities. The result shows that since 2010, urbanization level in Wanjiang City Belt is rising, but the trend is unstable. The differences among Wanjiang City Belt is weakening and quality is improving, and the level of urbanization is not adapted to the level of economic.From the global spatial correlation point of view, Wanjiang City Belt’s urbanization level has a positive correlation characteristics, it meant that the regions are concentrated. From the local spatial correlation point of view, H-H correlation pattern has the trend of moving along the Changjiang River to the east, H-L correlation pattern is primarily in Xuancheng, L-H correlation pattern evolves to Tongling, L-H correlation pattern locates in Luan, Anqing, Chizhou, and the development is stable. Change of river’s function, update of government’s policy, competition of cities are special?urbanization mechanisms of river-crossing cities.