The invention discloses an SAS motion compensation method based on delay table correction. According to the SAS motion compensation method, the delay table is not required to be recalculated during the motion compensation, a slope distance error from a pixel point to an actual sonar array caused by the motion error is directly converted into a delay error, and the delay error is added with an echodelay from the pixel point to an ideal sonar array in an ideal delay table, so that the actual echo delay can be acquired, and the motion compensation is realized. The method is advantageous in thathuge calculation amount caused by repeatedly reconstructing the delay table when compensating according to the actual flight path is saved, and processing efficiency is improved.