The invention belongs to the field of transformers and discloses a transformer high-voltage side cable wire incoming device comprising a transformer oil tank. A tank body of the transformer oil tank is made from 30 to 35 parts of butadiene styrene rubber, 15 to 20 parts of butadiene rubber, 15 to 20 parts of polyvinyl chloride, 10 to 12 parts of aluminum oxide, 8 to 10 parts of carbon fibers, 6 to 8 parts of water-borne epoxy resin, 4 to 7 parts of boron fibers and 1 to 2 parts of silane. The transformer high-voltage side cable wire incoming device is corrosion-resistant and possesses great mechanical performance and safety as well as reliability.