Environmental impacts of landuse planning of Jilin Province are assessed in the course of ecological construction based on GIS.Indexes of landscape pattern and serve function value of ecosystem,and extracting the data by ArcView from the digital land cover mapping which scale is 1:100000 are used in the assessment.The types of ecological economy system in Jilin Province are divided in order to facilitate the valid use of land resources and the reasonable arrangement of agr-productivity.