In the previous phase,urban development was driven by the"land finance"mechanism,sparking discussions on the issues of economic and urban health,as well as sustainable development models.Taking a county-level city as an example,this paper analyzes the characteristics of economic development driven by land finance,analyzes the urban development path and spatial expansion process guided by tourism and vacation real estate and land development,and the problems in urban functional layout and spatial organization,and explores the countermeasures for economic transformation and development and urban spatial optimization.It has a typical case reference significance for rational planning of urban space and promoting the urbanization development with the county as the carrier.