The concept of green development is an important starting point for the construction of the Yangtze River Economic Belt.On the basis of relevant research results，this paper constructs the evaluation index system that consists of 23 indicators in four areas：Green Production，Green Innovation，Green Management and Green Resources，to calculates and analyses the green development level of 110 cities in the Yangtze River Economic Belt.The overall results show that the eastern cities have high scores and the westerns’ is not.In additional，the capital cities and coastal cities also have high scores，while Hangzhou，Shanghai，Chongqing is the most development city in the Yangtze River Economic Belt.In terms of the spatial pattern，the green development ability presents significant difference in different regions：the middle and eastern regions have an obvious phenomenon of green development agglomeration，but the western regions just exist in few individual capital cities.At last，some suggestions are put forward to promote the green development level of the Yangtze River Economic Belt.