Abstract:Seismic stratigraphy has been developed and improved continuously in practical application in oil and gas exploration since it came out. Maybe the most outstanding progresses are sequence stratigraphy (P,R,Vail, et al.)and comprehensive geologic interpretation (L.R.Brown et al.).This article briefly describes the two kinds of research methodology and their application effects in oil and gas explorations. It is pointed out that sequence stratigraphy is actually an improvement on seismic stratigraphy while comprehensive seismic interpretation is the true development tendency of seismic stratigraphy.