Abstract: ABST RAC In order ensure the safety production of coal mines,three-dimensional seismic exploration in coal mine is mainly to solve problems of geological structures.The accuracy of data inter pretation differs due to different geological conditions.With the development of computer and geophysical techniques,the high signal/noise ratio and high resolution of 3D seismic data makes it possible for detailed interpretation.In this paper,based on examples of known mining area,we use wavelet analysis,variance body techniques,image processing,and other methods interpret small fault in detail.As a result,the accuracy of inter pretation is improved.