Abstract: In order to realize the precise complex geological body shift position, using phase shift and phase shift interpolation method, the imaging quality and computation efficiency are two factors we must consider. Therefore in view of the actual encountered in the various problems, following are the technical improvement of phase shift and phase shift interpolation method: A discussion of the space in the domain of the dynamic boundary absorption; First put forward wave number domain filtering method, above two kinds of method effectively avoid the endpoint effect and making the calculation efficiency improved significantly. The method of small speed migration and phase shift factor analysis described, both proved significantly improve the migration profile of the imaging quality.