Abstract: Landuse is an important carrier and intuitive result of urbanization process.  Driven by the dual transformation of China’s land system and developed regional economy, the interrelationship between urbanization and land use nonagriculturalization in coastal areas and its evolution are uniquely explored.  Based on the county land use information of Zhejiang Province in 2005, 2010 and 2015, this paper quantitatively analyzes the differentiation of county comprehensive urbanization, land use nonagriculturalization and the conversion source and flow of key county construction land in 2005-2015. Then use the Theil index and the bivariate spatial autocorrelation method to explore the spatial correlation model of urbanization level and land use nonagriculturalization in Zhejiang  Provinces.  (1) The level of urbanization in Zhejiang County is rapidly increasing and gradually achieving spatial balance and forming a grouplike urbanization situation centered on Hangzhou, Ningbo，Jinhua, Wenzhou and other municipal districts; the focus of construction land changes from the central and northern plains to the southeast coastal plains. However, the increase in the municipal area is still the most obvious. The increase or decrease of land for agricultural conversion is the key reason for the largescale change in construction land in Zhejiang County; (2) The spatial positive correlation between land nonagriculturalization and urbanization in Zhejiang Province has increased significantly, and the spatial differentiation situation has been highlighted. It has shown that the highaggregation area has shifted from the middle part to the east coast of Zhejiang and the islands. In general, the highhigh type is mostly distributed in the northern Zhejiang Plain, while the lowlow type extends from the coastal to the inland. (3) There is a significant scale effect of comprehensive urbanization and land use nonagriculturalization in Zhejiang Province, and the correlation difference increases with spatial scale.  This study reveals the spatial correlation between urbanization and land nonagriculturalization in the period of urbanization of economically developed provinces. It has important guiding value for promoting the synergy of land use planning and urban planning, and implementing land transfer and transadministrative area replacement according to local conditions.