Based on ERA40 monthly reanalysis data, the features of the land surface thermal anomalies over the mid - high latitudes of the Eurasian Continent during 1958-2001 were investigated, and the possible linkage between the land surface thermal anomalies and the atmospheric general circulation was further explored. Because of the global warming in recent years, the land surface temperature warming trend is more obvious and higher in the north of Lake Balkhash and Lake Baikal than the lower latitudes. Due to the inhomogeneously meridional land surface thermal changes,there is an apparent decadal weakening of the meridional land surface temperature gradient over the mid - latitude region of Eurasian Continent (around 40°N - 50° N) at the early 1980. Decreased meridional gradient of the surface soil temperature tends to decrease the meridional gradients of both the surface air temperature and the air temperature in the lower atmosphere. According to thermal wind theory,decreased meridional temperature gradient will result in the decrease of the atmospheric baroclinicity. Meanwhile, the gradient of low level troposphere temperature,the vertical shear of zonal wind and zonal wind itself will be decreased.