Abstract The Te map of Anhui and surrounding regions is calculated from EIGEN-6C4 gravity anomalies and ETOPO1 data using the isotropic fan wavelet method. The tectonic structure and geodynamic features of this area are discussed according to the Te map. The results indicate that the Te of Anhui and its surrounding regions varies from 5 to 75 km. The Te values of the Dabie orogenic belt and lower Yangtze region are low, as are the Te values along Tan-Lu fault. High Te values appear at Hehuai basin and Subei basin. The Te distribution mainly reflects the particular characteristics of tectonic structure and geodynamic features of corresponding areas.Most of the seismic activities located in regions with Te values vary from 10 to 50 km; the spatial distribution of earthquakes indicates that earthquakes tend to occur in regions with low Te or steep Te gradients,further indicating that lithospheres of regions with low Te or steep Te gradients show higher seismicity rateand are not strong enough to resist deformation.