With the available data from RS, GIS and other various information sources, evaluates comprehensively the human settlement index and coordination degree of pan-Changsha-Zhuzhou-Xiangtan urban agglomeration by means of entropy method. The results show that：Changsha is the most livable and weak coordination; Zhuzhou，Xiangtan and Changde are secondary livable and weak coordination; Hengyang is secondary livable and narrow coordination; Yueyang is secondary livable and general coordination; Loudi and Yiyang are less livable and general coordination. On the basis of the results，analyzes the spatial differences of the sub-systems of the human settlement system, and brings forward the optimization measures about the human settlement environment: implementing urban governance model，strengthening soft settlement environment constructing, quickening two-oriented social construction，constructing harmonious ecological environment, enforcing urban planning and construction management as well as perfecting the urban guidance and administration mechanism.