Abstract: Xinglongtai-Majuanzi buried-hill belt lies in the sag west of Liaohe depression. It features in complex oil-gas properties and the exploration of it is influenced by the quality of deep seismic data. Gravomagnetic and electric exploration was conducted in the area in 2004. The distribution and thickness variation of Mesozoic Formation is identified on the whole. It is predicted that the error between the buried depth of the top surface of Archaeozoic era and the actual drilling result of Magu-2 and Magu-3 wells is only ten meters or more. Post-tracing of newly drilled wells shows that the effect of seismic interpretation of gravomagnetic and electric data is equivalent to the drilling result. Hence the credibility and precision of the drilling result can be improved and the complicated geological problems can be solved on the basis of gravomagnetic and electric exploration. It is indicated that the target for exploration should be focused on NE-SW extension area of the buried-hill belt

Key words: Xinglongtai-Majuanzi buried-hill belt, Archaeozoic era, Mesozoic, integrated geological interpretation