Using the image-based retrieval the land surface temperature (LST)and relative brightness temperature were obtained from Landsat TM thermal-infrared datasets after geometric rectification,radiometric correction and atmospheric correction were applied on the Landsant TM imagine,which were taken from 30 August 2004 to 15 August 2010 in Shijiazhuang. Based on the datasets,we analyzed the spatial distribution and changes of LST in the scale of the city area and different eco-regions. The spatial distribution of LST presented increase and decrease trends across the city. The LST presented an increase trend in the city area and along the Hutuo river valley and a decrease trend in the hilly areas in Zanhuang,Lingshou and Xingtang counties from 2004 to 2010. From the perspective of relative brightness temperature,the heat fields of the city were constituted by green islands and slight heat islands,which accounted for 92. 33% and 88. 24% of the area in the study period. In general,the heat field intensity was getting higher but presented different characteristics in different eco-regions with apparent increases in the western hilly area. Except for the global warming,the change of the land use and the decreased vegetation coverage, the expanding of the city area,the fixed assets investment and the real estate development all contributed to the increase of the heat field intensity.