Abstract：We analyse the geometrical principle of prestack migration methods for common-offset seismic section,and expound the new thinking of prestack full migraton method,A wave equation method for prestack full migration is put forward,which is different from DMO method in means and image point position,This method performs in two steps: (1)migrating CDP data with different offsets to their original reflecting positions by making first coordinate system transform then wave equation wavefield extrapolation,and(2)staeking the migrated data.This method stands for all dips.The trial result of physical model shows that the wave equation method for prestack full migration is feasible for real seismic data processing.
