Abstract: Five　types of traps, including compressional, extensional, shearing, gravitative and strata-litholoical types, were divided on studying the feature of different tectonic movements, seismic sequences and depositional property in Wan'an Basin. The author have simulatesd their evolution relationship based on two sections in the north and south of the basin respectively. Furthermore, the genesis of traps was analyzed. It will provide some evidence for studying petroleum geology in the basin.