Abstract: On the basis of county GDP data of 7 time sections, dynamic characteristics of spatial evolution of county economy in Zhejiang in recent three decades were systematically analyzed by measuring some indexes and the GDP gravity centers with the aid of GIS technology.
The results showed that the differences in Zhejiangs county economy have experienced a process that enlarged at first and then narrowed in recent three decades, and at present the differences which mainly from north and south are comparatively large; The uneven development characterized by the fast growth of three blocks (i.e. the areas along the expressways of Hangzhou-Jinhua and Jinhua-Lishui, Hangzhou Bay Rim and the coastal areas of Wenzhou and Taizhou) has enlarged the county economy differences of the province, and now three areas including northem Zhejiang area headed by Hangzhou and Ningbo, Jinhua area headed by Yiwu, Wenzhou and Taizhou coastal areas have become advantage areas in county economy development in Zhejiang. In view of the variation of influencing factors of county economic pattern, some suggestions for promoting the striding development of less developed counties and overall coordination of county economy in Zhejiang were proposed．

Key words: county economy, spatial distribution, dynamic analysis, Zhejiang Province