Regional development is a dynamic process, and the development of urban agglomeration is in essence a process of constantly regional integration, a process evolving from reasonable layout, perfection of functions to the integration of system, to determine comprehensive evaluation index of the integration degree of Changsha-Zhuzhou- Xiangtan Urban Agglomeration for the quantitative measurement of the integration degree of Changsha-Zhuzhou- Xiangtan Urban Agglomeration from 2003 to 2015. The results showed that: 1) the degree of integration of ...