land surface temperature (LST) and urban heart island(UHI) intensity were used to analyze the changes of thermal environment effect based on the Landsat/TM images of 1988、1998、2002 and 2010.This paper applies NDISI to retrieve the information of build-up and then to discuss the quantitative relationship between land surface temperature (LST) and NDISI. The results shows that the less high temperature、high temperature and ultra high temperature showed a rising trend after the normalization. With more and more high grades of UHI intensity, construction land area was also growing. From the quantitative analysis, construction land has a positive linear relationship with LST. With the increase of area of construction land, the LST rise rate accelerated also.