The invention relates to a solar cell packaging adhesive film having low ionic mobility and belongs to the technical field of photovoltaic power generation fittings. The solar cell packaging adhesive film with low ionic mobility is formed by compounding a bonding layer adhesive film with an ion isolation layer in a certain proportion; the thickness proportion of the bonding layer to the ion isolation layer is (1:1)-(1:5); the thickness of the packaging adhesive film is 0.5-0.8 mm. According to the invention, the ion isolation layer is innovatively introduced; on one hand, the isolation layer has high insulativity of polyolefin elastomers, such as POE (Polyolefin Elastomer) and EPDM (Ethylene-Propylene-Diene Monomer); on the other hand, because of a hydrogen bond in a siloxane structure, the blending compatibility of the packaging adhesive film with other high-molecular polymers is greatly increased; meanwhile polymer linear polysiloxane is modified by using an ethylene-acrylate polymer; the poor mechanical property phenomenon of polysiloxane can be greatly improved.