Abstract: Complex geologic structure and strong facies change are the major features of continental fault depression basins. Such features often have great effect on the quality of seismic data, and bring about much dif ficulty in the correct interpretation of seismic data. Besides, the amount of fault interpretation models, the difference of geological views and the experience of interpretation also result in different interpretation from different interpretation persons for the same region. Based on the extensive investigation of continen tal fault depression basins, the authors sum up the interpretation experience of predecessors and establish "the seismic data interpretation technology for complex regions' in accordance with the features of continental fault depression basins by means of nthe equilibrium geologic sectionn and other theoretical ways. This technology has important guiding significance for the reduction of man-made factors and the elimination of multisolution interpretation in order to interpret seismic data more reasonably.