Abstract：In Liaodong Sag，the volcanic rock is controlled by the basement fault located in the middle of this area. The volcanic rock distribution appears as the North-South symmetry along the basement fault. Based on this understanding, we establish the volcanic rock development model with dome shaped eruptive rock in early stage and layered effusive rock in late stage. Using seismic inversion, waveform clustering, and time slices, 4 volcanic rock Dodies are discovered and confirmed. According to comparative analysis, we consider that the volcanic rock bodies in the area have three eruption models：central eruption, multiphase central eruption, fissure eruption. Hongxing volcanic rock body belongs to multiphase central eruption model. By the comprehensive evaluation, we have proposed a few well locations. Commercial oll and gas is discovered from one of the drilled wells, and good hydrocarbon show is found from another drilled well.
