Abstract: In order to investigate the development characteristics of the Gugui fault depression zone,a 3D seismic approach was used for the study.First ,a high-resolution seismic data processing was performed on the faulted zone by using the method of prestack time migration.In the case of accurate homing , seismic attributes and 3D visualization analysis were used and a full 3D interpretation method through combination of body-surface-line-point were used to inversigate fully implement faults in the Cenozoic development in the study area.On this basis ,a time-depth conversion was made on the Doon boundary of the Cenozoic and a depth contour map was obtained and A total of 8 active faults were interpreted in the region , and it was found through statistics that these faults were basically north-west oriented and tending to be almost upright with strong developmental regularity.With long extension length and large cutting depth , some faults also develop faults in the coal-bearing strata.With the influence of mining and the release of stress , fault dislocation surface could be widened ,and it may form a water flow channel.Therefore, it is a major threat to the safe mining of coal mines and must be given sufficient attention.