Abstract: The formation of the reservoirs in the second member of the Jialingjiang Formation in eastern Sichuan is dually controlled by sedimentation and diagenesis.The results of research indicate that the reservoirs were substantially generated in the restricted submarine plateau environments.The early exposure,corrosion and dolomitization are considered as the essential conditions for the formation of the reservoirs.In this paper,several models including the sedimentary,diagenetie,genetic and distribution models have been put for-ward to elucidate the formation mechanism,evolution and distribution of the reservoirs. These modles are very useful for the exploration and exploitation of gas pools in the study area.