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*Summary Reservoir simulation studies are very important tools for reservoir engineers to predict the remaining oil within a reservoir and to design a field development project. However, reservoir engineers could not make full use of seismic data to solve complex reservoir problems sometimes. So, it is very important to combine these two techniques efficiently in the reservoir development period. Using a heavy oilfield in northeast China as an example, this paper provides a new method to jointly interpret 3D seismic data and reservoir simulation results. The study shows that the reservoir simulation needs a very accurate static model (porosity, permeability, etc), but since acquiring one can be difficult, there are often reservoir simulation errors. At the same time, seismic data can also have some errors in imaging, from inversion procedure and the resolution can be relatively low. This makes it difficult to satisfy the studying requirement for reservoir engineer in the development section. But the integrated interpretation of this information improves the reliability of geological interpretation, providing reservoir engineers with the information necessary to develop oil fields.