Abstract: Using 3D seismic exploration technology to survey the location and scope of gob area has achieved good results,but prospecting lower coal group in gob area is still in the exploratory stage.The paper summarized the geophysical characteristics of lower coal group in gob area and analyzed the main factors influenceing exploration results.After multiple tests,we adopted “multiple stacks,single deep-well exciting,large-volum,low-frequency detector,variable parameter of viewing system”,the high signal-to-noise ratio seismic information of lower coal group was achieved,indicating that using 3D seismic exploration technology to survey lower coal group is feasible.