On the basis of the data from Landsat TM and OLI/TIRS, the Land Surface Temperature (LST) in Hohhot metropolitan area is retrieved. Compared with the MODIS LST products, the retrieved LST shows its good accuracy with an average relative error of 5% and a Root Mean Square Error (RMSE) of 1.53 ℃ (R=0.88, e=5%). The research result shows that the LST values of different types of Land Use/Land Cover (LULC) are different. The highest temperature appears in the building land and the lowest temperature appears in the vegetation and water coverage areas. LST is associated positively with the distribution of building land, bare land and semi bare land and is associated negatively with the distribution of vegetation. The building land and bare land have great influences on LST while the semi bare land and vegetation have more stable influences on LST.