Abstract: By taking the specific geological conditions of Chunguang block as an example,aiming at different lithologic structure,wave impedance models have been set up for forward modeling analysis.By selecting the seismic event underaparticular lithology structure that can best reflect the reservoir information,the reservoir distribution can be effectively predicted.The results indicate that the seismic response of thick mudstone interbedded with thin layer sandstone shows three seismic events.By tracking the three seismic events and extracting the seismic attributes of the amplitude along the layers,the reservoir distribution can be predicted.When the reservoir location is close to strong reflection interfaces,as the strong reflection interfaces will have strong interference on the seismic response characteristics of adjacent reservoirs,through forward modeling research,the seismic response characteristics can be looked for in location far away from the interference range of the strong reflection interface.The seismic response characteristics at the top of the thick sand layer has the most obvious sign at the strong wave trough seismic event where is the reservoir top,besides that,there is the clear wave boundary between this strong wave trough and the wave peaks.