Abstract: Because areal series distribution were found in seismic velocity from Shengbei area(Turpan-Hami basin),local structures were difficult to be clarified in two exploratory wells.3D prestack depth migration processing was then made based on geological model to solve the problem. This paper reviewed the migration processing and related modeldevelopment,including some key techniques applied in processing and 3D interpretation demonstration. These tech-niques and interpretation results can be as guide for the processing in the future and provide favorable objectives for ex-panding petroleum reserves scale in this area.