In the 2 d and 3 d seismic exploration, regardless of time section or data volume, all followed the comparative interpretation criterion when interpreting data. When interpretation result was not in conformity with the practical data, mainly because did not get the characteristics of reflected wave. Under the local interface changes, was the time section was generally accompanied by some special wave or reflection wave phenomenon such as distortion, which was worthy of attention and analysis, 2 d seismic time profile of the opposite roof fault in Dacheng exploration area was taken as an example, making good use of all kinds of special wave provided a more perfect technology for enhancing the reliability of interpretation results.