Abstract: Based on the data of geo-temperature and rock thermophysical parameters and geophysical data collected from the South Huabei Basins , the thermal structure of this region is analyzed. The results show that the average heat flow value of the South Huabei Basins is 53.7 mW/m2 , the values of mantle heat flow vary from 30 mW/m2 to 34 mW/m2 , the temperature of Moho varies from 500℃ to 550℃ , the thicknesses of thermal lithosphere are between 110km and 130km. Furthermore, integrated with the lithospheric rheological modeling , the rheological features of the lithosphere and its geodynamics signification in study area are also discussed . The lithosphere strength of the South Huabei Basin is about （7.6~23.3）×1012 N/m . The lithosphere beneath the South Huabei Basins has a obvious Sandwich-like Structure : The upper crust is in the brittle field; The middle crust and the lower crust is in the ductile field. This kind of stratified deformation mechanism is the controlling factor for the geodynamics process on basin formation and evolution.