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As an ultimate goal of urban development, urban livability was studied by taking Changchun city as research area in this paper. The evaluation index system of livability was established by taking Geographic Information System and Remote Sensing as technical means to integrate and process the basic databases from different sources, forms and scales synthetically. The livable scores of each grid in the research area were obtained by combining Mean Square Deviation Method and Principle Component Analysis Method to determine the index weights. The results of the study showed that the whole livable level of Changchun was not high and the areas with higher scores than the average level accounted for 27.48%. Taking the streets as units of comprehensive evaluation and analysis, the second-grade livable street with medium conditions of livability accounts for 50% of the 46 streets we examined and most of them are mainly distributed in Luyuan District and Nanguan District.