The full gravity gradient tensor was calculated from gravity anomaly data of Hulin Basin with fast Fourier transform. Based on zero values of Vxx and Vyy components indicating boundaries of sources and their orientations approximately along x or y axes, Vzz indicating the location and extent of anomalies, Vzx, Vzy and Vxy highlighting structure of NS, EW and NE (NW), a comprehensive analysis was conducted on the characteristics of Hulin Basin gravity and its gradient tensor. The authors deduced that there are NE-NW-NEE-and EW-and NS-trending faults in the study area, five of which were described.