Abstract: Faults development is the main characteristic of central uplift belt in the Dongying Sag of BohaiBay Basin.Structural features of the central uplift belt have been investigated by basin analysis and accommodation zone theory,indicating that,uplift forming has been controlled by the second grade faults,local structure has been controlled and complicated by the third and forth grade faults,and oil-gas accumulation level has been controlled by the combination features of faults.Seismic and log data,coherence technology and wavelet transformation are presented to interpret faulted block,resulting in the method of complicated fault block oil-gas pool study,description as well as forecast,proved effective in exploration and development practice.