Abstract:The raising resolution processing is an important step in seismic data processing, along with gradually deepening of lithologic seismic exploration,the people begun to know that the relative preserved amplitude is an important basis of high-resolution processing, among which the prestack raising resolution is mainly to achieve the goal of relative preserved amplitude by surface consistent statistical method.However,poststack raising resolotion is also one of steps of raising resolution processing, but importance of poststack relative preserved amplitude does not rivet full attention of people.The issue of poststack preserved amplitude does not non-existence in practice,it is often neglected by the people instead.The paper specially studied the issue of relative preserved amplitude for poststack raising resolution,presented basic conditions of poststack relative preserved ampli-lode for raising resolution and judged whether a poststack raising resolution processing meets the basis of relative preserved amplitude or not.