Since the implementation of the Yangtze River Middle Range City Cluster Development Plan，rapid progresses have been made in this region，especially in the field of public service integration. Experiences with regard to tourism，social security and housing provident fund has been introduced to other places in China. Given their present application in major cities only，how they could be extended to other cities wait to be examined in this paper that constructs an index framework including six aspects and seventeen indicators. Through the analysis of data from 2009 to 2015，this paper finds greater integration has been achieved overall despite different extents in different aspects. Besides，gaps between three provinces are being closed with those within each province becoming wider. It concludes with suggestions that public service coordination be extended from between major cities across three provinces to between major cities and cities surrounding them within provincial boundaries.