Abstarct: Increasingly challenging exploration targets with respect to the geological complexity and data quality require more accurate seismic imaging. The common reflection surface (CRS) stack method produces zero offset (ZO) sections with a high signal to noise ratio and better continuity of reflection events, particularly for dipping structures, from multi-coverage data. However, CRS stacking can't solve the problem of conflicting surface. Common diffraction surface (CDS) stack method is an improvement of CRS method that considers an angle spectrum instead of one coherent angle in its attribute definition. The new common diffraction surface operator in this study was defined by the parabolic equation. The new operator and the other operators, common refelection and common diffraction surface, were applied on the synthetic data of Sigsbee and a real data with complex structure. The result were compared to see the fitness of different operator to the seismic events in the data. The common reflection surface was not able to show all of the diffractions, while the common diffraction surface could image all of the diffraction in the stacked section. However, the operator of the common diffraction surface by the parabolic equation could not fit the true seismic events in long offsets comparing to the common diffraction surface by the hyperbolic equation. The CDS method could completely overcome the problem of conflicting dip situations and yields a stacked section with more continuous events and more clear images of weak events