The invention discloses a loose sandstone sample packaging method for electrical property determination. The method is mainly characterized in that the circumferential surface of a loose sandstone sample is wrapped by first insulation teflon adhesive tape, a first metallic tin sleeve, second insulation teflon adhesive tape and a second metallic tin sleeve in sequence, and stainless steel meshes are fixed to the two end faces of the loose sandstone sample, wherein the middle of the first metallic tin sleeve is broken to form a gap, and the first metallic tin sleeve is completely covered with the second insulation teflon adhesive tape. By means of the method, the loose sandstone sample can be better protected and solidified, it is guaranteed that the two end faces of the sample are insulated and the sample is resistant to solvent cleaning, elastic deformation caused by other materials and influences on the pore structure of rock from adhesives dissolved in a solvent are avoided, in this way, electrical property determination data are closer to actual conditions of a stratum, and the technical problems that insulation, solidification and solvent cleaning resistance of the loose sandstone sample are difficult to achieve in electrical property determination sample treatment in the field of researching the rule of changing of the electrical properties of a reservoir stratum rock before and after water flooding are solved.