Abstract: Three-dimensional seismic has become a very mature technology in coal mining area exploration, but the application of three-dimensional seismic to the detection of lower group coal in goaf is still in the exploratory stage. Taking the actual effect of applying three-dimensional seismic exploration to the exploration of the lower group of coal under the goaf carried out in a mine as an example, this paper mainly introduces the key processing technologies and application processing results of wavelet shaping, residual static correction and... Filtering in data processing, gives the final processed migration profile results, better eliminates the noise, and makes a new exploration in the processing of three-dimensional seismic data under the goaf.