The studies of the evaluation of the types of urban land quality classification are so far very few. In this paper,the authors systematically explore the theory,the selection of types,the factors and the establishment of factor system,the basic evaluation method and the model el of the evaluation of the urban land resource. The model of land evaluation has been applied to the evaluation of the urban land of Jiaojiang City ,Zhejiang Province. The results turn out to be successful for the optimum allocation of land resource.