Based on the data base of the geological genetic analysis of oil and gas reservoir, the main contents of the study include structure, reservoir and oil and gas distribution characteristics. Combined with scientific research practice, summarized analysis method of reservoir geological genesis to eight kinds. Such as the field outcrop and modern deposition investigation, core observation, description, thin section observation under microscope identification, forecasts of geophysical interpretation, geological statistics method, analytical test, physical simulation and numerical simulation methods, etc.. And the advantages and disadvantages of different research methods were discussed too. Reservoir geological genesis analysis of the problems at present are summarized including reservoir geologic origin analysis emphasis is not enough, partial qualitative research method, geologic origin analysis and reservoir characterization, reservoir characterization of restricted the accuracy of geological genesis analysis precision, comprehensive analysis of geological origin is not strong, special type reservoir geological factors still exist many problems, etc.. Points out the future development direction of main reservoir geologic origin analysis including rely on reservoir geologic origin analysis to solve difficult problems in oil and gas field development, through a variety of simulation method to improve reservoir geologic origin analysis quantitative level, enhancing geological genesis analysis to improve the level of reservoir characterization, the use of reservoir characterization analysis of geological formation progress and expanding reservoir geological genesis analysis in the field of oil and gas field development in the application, special type reservoir geological genesis analysis, etc..