Abstract: By using the data of core, logging, well logging, gas test, production test and analytical analysis, the lithology, physical properties, electrical property and gas bearing property of He 2 gas reservoirs in Jin 66 well block of Dongsheng gas field were comprehensively analyzed. The correlation among them was established and the internal relationship was studied. The study shows that the lithology of He 2 gas reservoirs in Jin 66 well block of Dongsheng gas field is mainly feldspathic lithic sandstone and lithic arkose sandstone, which belongs to the low porosity and low permeability reservoir and contains gas deviation. Lithology controls the physical properties of the reservoir, and the gas-bearing properties of the reservoir are controlled by both physical properties and lithology. The reservoir electrical property is related to the correlation between the reservoir physical property and gas bearing property, and the acoustic time difference, resistivity and compensation density can well reflect the reservoir physical properties and gas bearing property.