Abstract: In this paper, the research contents and methods on petroleum system are simply introduced and its localization is pointedout. After in troducing the history, connotation, extension and research methods of oil pool-forming dynamics, the relationship of above two concepts is discussed. Conclusions are drown as follows: ① oil-pool forming dynamics is combination of the system theory, dynamics and traditional petroleum geology and application in complicated geology backg round in China. ② Carrying out the research on oil-pool forming dynamic process guided by the petro leum system is an inevitable trend of advanced petroleum geology theory