Abstract: Depending on the problem of two-dimensional interpretation in coal mine seismic data and advantage of 3D visualization in interpretation,3D visualization was applied to interpretation.With consideration the features of 3D coal seismic data,programming combine with,OpenGL and VC++ 6.0 were researched.Based on coal seismic data characteristics,the system of Sgy3D based on windows was developed.Function in Sgy3D contain: display volume,profile of inline,cross line,time slice,contour,arbitrary line.Much operation can be realized,such as zoom in any size,move.Applications with Sgy3D generate good effects for seismic exploration and real-time seismic analysis.