Abstract: The large scale processing can solve the objective error coming from the difference of collecting time and parameters so as to have chance to interpret in seismic data large scale processing.According to the features between old and new data,this paper have work hard in static correction,prestack removing noise,compensating energy,high resolution, averaging CMP.And it systemically resolves the key problem in large scale processing.By analyzing seismic data and interpreting real data,we think that the large scale data is better suitable to interpret the structure.However,study of seismic attribute is depended on real situation.The single area can be better selected to interpret when the size of large scale CDP in unite area is different from single area,otherwise unite area can be selected.