This paper takes the 88 counties and county-level cities in Hunan as research object,and divides them into four regions,that is, ChangZhuTan, Dongting Lake, the Western Hunan and the Southern Hunan. It empirically analyzes the change of county economy disparity and its influencing factors by employing Theil index and Gini index. The results show that,the county economy disparity in Hunan expands from 2001 to 2010. From the aspect of space structure,county e- conomy disparity is mainly caused by the disparity within the region, while the contribution of regional disparities is grow- ing. From t...