Luzhou uplift in Sichuan Basin is an important area for oil and gas exploration, and Jialingjiang Formation is the main producing formation in this area. Based on the guidance of theories and methods of carbonate reservoir geology and on the basis of core observation, cast thin section analysis, SEM and analytical data of physical property and pore structure, the authors studied in detail the petrologic characteristics of Jialingjiang Formation, the storage space type, pore features and electrical performance characteristics of Jia II1-Jia I and Jia II3 reservoirs in Danfeng-Tanghe area. The researches show that Jia II1-Jia I and Jia II3 reservoirs are mainly powder fine-crystalline and grained dolomite, and the accumulation spaces are mainly secondary pores.