The coal reservoir was a kind of typical fluid-solid-coupling seepage model of double-phase medium(DPM),the relative displacement existed between the solid granules and pore fluid in DPM,and would primarily result in the change of seismic wave energy redistribution.In order to achieve the aim of directly determining gas enrichment region according to the seismic data,authors tried to extract the attributes of seismic wave with specific frequency by the triangle filter,then determine the maximum energy of seismic waves within the given high frequency and low frequency ranges by scanning the maximum energy of seismic wave field.The test of actual data indicated that the maximum energy scan algorithm can improve the precision and reliability of processing and inversion of seismic data.