TMband 6 of Landsat can measure the differences in radiation temperature of ground surface features. Based on this capability, the IHStransformation was applied to put-out heat-islands of Naming City. Some maps which comprehensively reflect the heat distribution of Naming city in summer season hay. been obtained by using the, TMhand 6 and band 3 data. The results Prove that satellite remote sensing, is a good tool for research on heat-island effect and estimation of the environmental quality of city.