This paper detailedly introduces study current situation of fine reservoir description nowadays from two parts of outside and inland. Key points overseas have changed from field outcrop analysis and experimental analysis and numerical simulation to seismic inversion and microseism reservoir characterization and artificial intelligence neural networks. Objects of study have changed from traditional sandstones and carbonate rocks to tight reservoir. Integrity and seismic technique and computer technology are further strengthened. Researches on natural fracture reservoir and other characteristics reservoir have great improvement. Reservoir description inland has formed a whole set of procedure and method on the base of primitively learning by imitation abroad. Research contents also becomes relatively comprehensive, and nearly contains all parts of reservoir geology researches. Five key points of fine reservoir description were discussed combined with study experiences, such as stratum carved up that guided by high resolution sequence stratigraphy and architecture analysis on the base of sediementary factor researches and classified evaluation of reservoir and study on reservoir flow unit and geological modeling. On this basis of these, the problems in fine reservoir description were discussed. It considered that quantitative research should be strengthened in fine reservoir description, and all kinds of new methods about seismic and logging should be strengthened too. Experimental technique and multiple point geostatistics modeling existed some problems. It didn’t attach importance to reservoir changed during development process researches. On the discussion above, eight aspects of the development tendency of this study were pointed out too.