Abstract: Revealing the relations of intrinsic spatial link characters of urban agglomeration by scientific method is the key to analyze the problems and optimize the strategies for the achievement of sustainable development. Based on the evaluation system of urban comprehensive quality index and accessibility analysis, this paper explored an empirical analysis on the spatial linkages of the urban agglomeration around Changsha-Zhuzhou-Xiangtan city group from three aspects of spatial interrelation, external service ability and internal agglomeration ability since 2006. The results showed that the spatial interaction of Changsha-Zhuzhou-Xiangtan urban agglomeration presents inner structure; it is obvious that the effect of traffic science and technology on urban spatial relation and the pattern of spatial connection network appear to be further expanded. External service ability is high in the north; low in the south, but the degree of regional disparities has been greatly improved, which is showing the coexistence of Changsha as the core and Changde as the secondary center, also Yiyang and Loudi under the low concentration of urban internal agglomeration. The ability of urban agglomeration on inner agglomeration is distributed and expanded along high-speed railway lines. After the opening of the Chang-Kun passenger dedicated Line, the core area began to show the trend of westward shift. At last, it is suggest that strengthen regional industrial collaboration, optimize the strategic policy and improve the integrated transportation system.