Abstract: The evaluation and guarantee of the quality of automated map generalization is recently a hot point at home and abroad.We mainly study on the quality assessment of scattered polygons.In order to get the final assessment of the whole cartographic area′s generalization,we propose a method containing both qualitative and quantitative ways.According to the criterion of some critical indices of features,this method begins with the presentation of these indices.By comparing with the criterion,every feature will have a specific assessment result for its generalization.After integrating all the results,we can get the final assessment of generalization.At last,taking the generalization of rural settlements as an example,we introduce the process of quality assessment in detail,which has been proved to be feassible.