Based on the mechanism of agricultural landuse conversion at household level,the relationship between the conversion and its related factors was analyzed by using the Tobit model and 329 valid questionnaires in Tongshan City,Rudong and Changshu counties.The three investigated regions respectively represent the south,middle,and north area of Jiangsu Province.Results from the analysis showed that agricultural land conversion was greatly influenced by the participation of land market and labor market,location,endowment of households,and so on.When land market was adopted,agricultural landuse conversion tended to occur.As far as labor transfer concerned,different types of labor transfer had different influences on landuse conversion,and landuse conversion increased with the income from increased nonagricultural activities.Furthermore,these impacts showed a zonal difference.