Owing to Yanshanian and Himalayan movement, a series of downfaulted basins were formed in late Cretaceous-Paleogene, when Paleocene halite of salt lake deposition was formed in Shashi Formation of Jiangling depression. Homogenization temperatures of the inclusions in Paleocene halite of Jiangling depression vary from 18 to 50℃, mainly in the range of 22～38℃; the δ¹⁸O values of the inclusion are between -1.2‰ and 9.7‰, with an average of 5.1‰; the δD values vary from -91.5‰ to -63.5‰, -79.4‰ on average. These data are consistent with the thermal features of paleoclimate in that period. However, the homogenization temperatures of inclusions and the H-O isotope values are relatively high in the middle-lower halite layer and relatively low at the top of the same halite layer. This understanding of paleoclimate has important significance for the study of the evolutionary phase of salt lake, the halite origin and the prediction of geological stages and strata of potash salts.