In order to promote the seismic reservoir，it is necessary to further expound its concept，contents，key techniques，background and the relations with other related subjects．Seismic reservoir is an interdisciplinary which combines seismics and geology and just in an embryonic stage，and it is applicable for every stages of exploration and development as a subdiscipline of reservoir geology．On the basis of inheriting the thoughts of seismic stratigraphy， sequence stratigraphy and seismic sedimentology，seismic reservoir has more profound connotation and more comprehensive denotation．It uses seismic and geologic data to research the lithology，spatial configuration，space， properties and fluids contained in the reservoir and to describe 3D reservoir space features semiquantitatively and quantitatively，which makes the description of reservoir heterogeneity and reservoir space features more precise． Seismic reservoir will be continuously developed and improved with the fast developing of geophysical techniques．