This paper is a study of the land use suitability evaluation theory and methods in a case of study in Chengkou County,Chongqing.Firstly we build a spatial database through spatial data collection by using the MAPGIS and ARCVIEW.Secondly,we establish land suitability evaluation indices system,and built a spatial attribute database based on standardization of multiple factors and the weight of standardized.Then we identify the minimum evaluation unit of the land suitability assessment.Finally,we rank the scor...