Abstract:With the aid of both the 2-D Fourier transform theory and the CT technique-projection and reconstruction principle in image processing I use scalar wave equation to develop CT migration formulas-projection and reconstruction expressions for seismic data processing,Applying the formulas to the migration of a horizontal seismic stack section,I can obtain a ccnvcntional migration section,or a migration section without noise or with interpolated traces.This method is available to migtrate the horizontal stack section which has low S/N ratio or unequal group intervals,It has advantages such as high S/N ratio,no "boundary reflection" effect and so forth,The theoretical and real data porcessing results obtained using this method are shown in this paper.