Abstract: Based on gravity data and its processing interpretation, the paper draws a conclusion of the study area's stratum structure and tectonic development features after getting the study area's characteristics of variation in gravity field, fault structure, local anomalies, interpreting results of fitting profile and geological tectonic research. The paper investigates on the geological structure characteristics and tectonic evolution in accordance with the former exploration results and geological knowledge which obtained from the project. The discussion and analysis on study area's structural characteristics and its evolution will not only provide a reference for geological exploration, comprehensive study or energy exploration but also enlighten the geological exploration work in this research area with the geological research results.